CN207326315U - A kind of running-in machine for sliding rail of automobile seat break-in - Google Patents

Abstract

The utility model discloses a running-in machine for sliding rails of automobile seats; in the running-in machine provided by the utility model, the outer sliding rails are positioned on the sliding seat body through the sliding rail positioning parts, and the outer sliding rails are driven to be opposite to the inner sliding rails. The slide rail reciprocates, because the inner slide rail and the steel ball are matched inside the outer slide rail, so the slide rail positioning part can be connected to any position on the outer wall of the outer slide rail, not limited to the end, but can be connected to the outer wall of the outer slide rail The middle part, etc., and the connection area is relatively large, so that the sliding force applied by the crank drive mechanism to the outer slide rail through the slide body can also be close to the middle of the outer slide rail, avoiding the torque on the outer slide rail and improving the stability of the outer slide rail. The smoothness of sliding improves the running-in quality between the outer slide rail and the inner slide rail and significantly improves the running-in efficiency.

Description

A running-in machine for running-in of car seat slide rails

technical field

The utility model relates to the technical field of running-in of slide rails of automobile seats, in particular to a running-in machine for running-in of slide rails of automobile seats.

Background technique

The car seat slide rail is one of the important components of the car, and its main function is to realize the front and rear adjustment of the car seat. The car seat slide rail mainly includes an outer rail and an inner rail, wherein the outer rail is installed on the car floor, and the inner rail is installed on the seat, and the relative sliding between the two is used to realize the adjustment of the car seat, so that the occupants can obtain more comfortable state.

Vehicles have certain standards for sliding forces between the outer and inner rails. After the machining of the outer rail and the inner rail is completed, the sliding force between the two usually cannot meet the requirements of the vehicle, and the two need to go through a certain number of times of running-in to meet the requirements of the vehicle.

The running-in work of the outer and inner rails is usually done on a special running-in machine. In the prior art, the outer rail is usually fixed on the workbench of the grinding machine, and the driving part is used to drive the inner rail to slide back and forth relative to the outer rail, so as to realize the friction between the two.

With the mass production of car seats and the improvement of user requirements on the sliding force of the slide rail assembly, the friction quality and friction efficiency of the inner rail and the outer rail have become more and more concerned by those skilled in the art.

Utility model content

The utility model provides a running-in machine for sliding rails of automobile seats, which comprises a frame, and the following components are arranged on the frame:

a crank drive mechanism, comprising a cam connected to a rotating shaft, the rotating shaft being arranged vertically;

The slider mechanism includes a slider body, the bottom of the slider body is slidably matched with the frame, and the slider body is provided with a slide rail positioning part for positioning the outer slide rail of the seat slide rail; The end of the slider body is connected to the cam through a connecting rod, so that under the rotation of the cam, the slider body reciprocates and slides relative to the frame.

Compared with driving the inner slide rail to slide in the prior art, in the running-in machine provided by the utility model, the outer slide rail is positioned on the slide body through the slide rail positioning part, and the outer slide rail is driven to reciprocate relative to the inner slide rail. The inner slide rail fits inside the outer slide rail, so the slide rail positioning part can be connected to any position of the outer wall of the outer slide rail, not limited to the end, but can be connected to the middle of the outer wall of the outer slide rail, etc., and the connection area is relatively large In this way, the sliding force applied by the crank drive mechanism on the outer slide rail through the slide body can also be close to the middle of the outer slide rail, avoiding the torque on the outer slide rail, improving the sliding stability of the outer slide rail, and improving the stability of the outer slide rail and the outer slide rail. The running-in quality between the two inner slide rails.

Optionally, the slider body is a flat plate structure, two longitudinally extending slide rails are provided at both ends of the lower surface of the flat plate structure, and longitudinal guide rails are fixed on the upper surface of the frame. The guide rail cooperates with each of the slide rails to slide.

Optionally, the slider mechanism further includes a support, the support includes a horizontal plate and a vertical plate forming a right-angle structure, the two ends of the horizontal plate have L-shaped legs bent inward, and the two L The bottom surface of the L-shaped leg and the lower surface of the vertical plate jointly form a support surface to be fixed on the upper surface of the slider body; and the vertical surfaces of the vertical plate and the L-shaped leg are provided with multiple weight-reducing hole.

Optionally, the bending surface of the L-shaped leg is further provided with a clamping block, and the body of the slider is provided with a clamping groove which is clamped and fixed with the clamping block.

Optionally, one end of the slider body is provided with a mounting hole, and a connecting column is fixed in the mounting hole, and a bearing is installed on the shaft section of the connecting column protruding from the mounting hole, and the connecting rod passes through the The bearing is sleeved on the connecting column.

Optionally, the slider mechanism further includes a first collar and a second collar, the first collar is installed on the inner wall of the connecting hole of the connecting rod, and the second collar is installed on the connecting column The outer peripheral wall; the bearing is limited between the first collar and the second collar.

Optionally, the upper end of the connecting column is fixedly connected to the slider body through a connecting piece.

Optionally, the upper end surface of the connecting column is provided with an upwardly opening installation groove, the connecting piece includes a Z-shaped piece and a fixing pin, and the Z-shaped piece includes a first transverse wall, a second transverse wall and a A horizontal wall and the vertical wall of the second horizontal wall, the first horizontal wall is provided with a through hole, and the fixing pin is simultaneously provided in the through hole of the first horizontal wall and the inside of the installation groove to fix the first horizontal wall A horizontal wall is connected to the column; the second horizontal wall is provided with a matching structure fixed with the slider body.

Optionally, from top to bottom, the fixing pin includes a first shaft segment, a second shaft segment and a third shaft segment with successively decreasing diameters, and the first shaft segment is clamped on the outside of the first transverse wall , the second shaft section has an interference fit with the through hole of the first transverse wall, and the third shaft section has an interference fit with the installation groove.

Optionally, a first axial blind hole and a second axial blind hole are respectively provided on both ends of the fixing pin.

Optionally, several lightening holes are provided on the rod body of the connecting rod.

Optionally, the position, weight and shape of the center of mass of the cam are determined according to the weight of the slider mechanism, the rotational speed of the rotating shaft and the principle of dynamic balance.

Optionally, the crank drive mechanism includes a mounting body and a double angular contact bearing assembly, the camshaft of the cam is supported on the mounting body through the double angular contact bearing assembly, and the camshaft is connected to the rotating shaft , the installation main body is also provided with an installation structure that cooperates and fixes with the frame of the grinding machine.

Optionally, the cam is provided with a mounting hole, and a keyway is symmetrically arranged in the mounting hole, the upper end of the camshaft is connected to the keyway through a corresponding key structure, and the camshaft is located outside the mounting hole. The shaft section has an annular flange to which the cam support is fixed.

Optionally, the double angular contact bearing assembly includes a bearing sleeve. From top to bottom, a first double angular contact bearing, a positioning sleeve and a second double angular contact bearing are sequentially arranged inside the bearing sleeve, and the bearing sleeve is fixed on the installation body.

Optionally, a first snap ring and a second snap ring are respectively fixed on both ends of the bearing sleeve, which are respectively used to limit the first double angular contact bearing and the second double angular contact bearing. The snap ring and the second snap ring are sleeved on the outer periphery of the camshaft.

Optionally, a lock nut is further provided on the camshaft, and the lock nut is provided outside the bearing sleeve to limit the lower limit position of the second double angular contact bearing.

Optionally, the cam driving device specifically includes a servo motor, the rotating shaft is the output shaft of the servo motor, the output shaft of the servo motor is connected to the camshaft through a coupling, and the housing of the servo motor The body is installed on the installation body.

Optionally, the frame includes a workbench, the workbench is provided with a through hole, the installation body is installed on the lower surface of the workbench, and the output shaft of the servo motor passes through the workbench. The through hole is connected with the cam located above the workbench.

Optionally, a sensor is further arranged on the installation main body, an induction plate is installed on the camshaft, and the sensor cooperates with the induction plate to determine the control origin position of the servo motor.

Optionally, the cam is connected to the slider body through a connecting rod, the cam includes a large end and a small end, the small end is provided with a connecting hole, and a connecting column is installed inside the connecting hole to connect A deep groove ball bearing is installed on the column, and one end of the connecting rod is connected to the connecting column through the deep groove ball bearing.

Optionally, the connecting hole is a stepped hole, which includes two sections from top to bottom: a large-diameter section and a small-diameter section, the large-diameter section and the small-diameter section form a stepped surface, and the connecting column includes from top to bottom The bearing installation section, the flange section and the installation section, the flange section abuts against the step surface, and the installation section is accommodated inside the small diameter section.

Optionally, a retaining ring for positioning the lower limit position of the deep groove ball bearing is also provided on the connecting column.

Optionally, the outer slide rail is pre-processed with a fixing structure that is installed in cooperation with the vehicle frame, and the slide rail positioning component is installed in cooperation with the fixing structure.

In addition, the utility model also provides a control method of the running-in machine for the running-in of the car seat slide rail described in any one of the above, the method is specifically:

Pre-assemble the crank drive mechanism and slider mechanism on the frame, position the outer slide rail on the slider mechanism and fix the inner slide rail;

The drive rotation shaft drives the cam to rotate, and then drives the outer slide rail to slide back and forth relative to the inner slide rail, so as to realize the running-in between the inner slide rail and the outer slide rail.

Description of drawings

Fig. 1 is the partial structure schematic diagram of running-in machine in a kind of embodiment of the utility model;

Fig. 2 is a schematic structural view of a slider mechanism in an embodiment of the present invention;

Fig. 3 is an exploded schematic diagram of the slider mechanism in an embodiment of the utility model;

Fig. 4 is the structural representation of connecting rod in Fig. 2;

Fig. 5 is a schematic structural view of the support in Fig. 2;

Fig. 6 is a schematic view of the structure in another direction of the support in Fig. 2;

Fig. 7 is a cross-sectional view of the connection position between the connecting rod and the slider body in a specific embodiment of the present invention;

Fig. 8 is a schematic structural view of the crank drive mechanism in a specific embodiment of the present invention;

Figure 9 is an exploded view of Figure 8;

Fig. 10 is a schematic cross-sectional view of the connection position of the camshaft in Fig. 8;

Fig. 11 is a structural schematic diagram of a cam in a specific embodiment of the present invention;

Fig. 12 is a structural schematic diagram of a camshaft in a specific embodiment of the present invention.

Among them, in Figure 1 to Figure 12:

Rack 1; guide rail mounting plate 11; guide rail 1a;

Crank driving mechanism 2; installation main body 20; cam 21; camshaft 231; servo motor 22; connecting column 23; first double angular contact bearing 241; second double angular contact bearing 242; bearing sleeve 243; positioning sleeve 244; deep groove Ball bearing 25; retaining ring 251; first snap ring 261; second snap ring 262; lock nut 263; retaining ring 264; sensor 27; coupling 28; reducer 29;

Slider mechanism 3; slide body 31; slide rail 3a; slide rail positioning part 32; connecting rod 33; weight reduction hole 33a; connecting hole 331; connecting hole 332; support 34; Type leg 343, block 344, lightening hole 34a; Connecting column 35; Z-shaped part 36; First cross wall 361; Collar 392.

Detailed ways

This paper conducts in-depth research on the working mode and structure of the existing high-speed running-in machine. The research finds that: in the method of fixing the outer rail and driving the inner rail to slide back and forth, because the inner rail is installed inside the outer rail, in order to slide, The transmission part connected with the inner rail does not interfere with the outer rail, and the transmission part can only be connected with the end of the inner rail. That is, the driving force of the driving part is applied to one end of the inner rail through the transmission part.

This paper finds that the force point of the transmission part on the inner rail is located at the end of the inner rail, and the inner rail is subjected to a large torque, which is easy to cause vibration during the sliding process, which seriously affects the friction quality between the inner rail and the outer rail.

Based on the above research findings, a high-speed running-in machine with higher frictional quality is proposed in this paper.

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 to Fig. 12, Fig. 1 is a partial structural diagram of a running-in machine in an embodiment of the utility model; Fig. 2 is a schematic structural diagram of a slider mechanism in an embodiment of the utility model; Fig. 3 is a schematic diagram of the utility model An exploded schematic diagram of the slider mechanism in an embodiment; Fig. 4 is a schematic structural diagram of the connecting rod in Fig. 2; Fig. 5 is a schematic structural diagram of the support in Fig. 2; Fig. 6 is a schematic structural view of the support in Fig. 2 in another direction ; Fig. 7 is a cross-sectional view of the connection position between the connecting rod and the slider body in a specific embodiment of the utility model; Fig. 8 is a structural schematic diagram of the crank drive mechanism in a specific embodiment of the utility model; Fig. 9 is the exploded view of Fig. 8 Fig. 10 is a schematic cross-sectional view of the connection position of the camshaft in Fig. 8; Fig. 11 is a schematic structural view of the cam in a specific embodiment of the utility model; Fig. 12 is a structure of the camshaft in a specific embodiment of the utility model schematic diagram.

The utility model provides a running-in machine for sliding rails of automobile seats, which comprises a frame 1, a crank driving mechanism 2 and a slider mechanism 3.

Wherein, the frame 1 is fixed on the ground or other supporting platforms, and its main function is to provide an installation platform and support various components installed on it. The frame 1 is provided with a workbench, usually the workbench is set horizontally. As long as the support and installation requirements for components can be met, the structure of the rack 1 can be flexibly set, which is not specifically limited herein.

The crank drive mechanism 2 in the utility model includes a cam 21 connected to the rotating shaft, and the rotating shaft is vertically arranged, that is to say, the cam 21 can rotate with the rotating shaft in the horizontal plane. The rotating shaft provides power for the rotation of the cam 21 . The crank driving mechanism 2 may include a servo motor 22 , which can realize high-speed and precise control, and the rotating shaft may be an output shaft of the servo motor 22 .

For ease of installation, the crank drive mechanism 2 can be pre-assembled as a whole, and then the assembled whole is installed on the frame 1 . Therefore, the crank driving mechanism 2 may include an installation body 20, which provides an installation basis for other components in the crank driving mechanism 2, and the installation body 20 is provided with an installation structure that cooperates with the frame 1 of the grinding machine. The components of the crank driving mechanism 2 can be pre-assembled on the installation body 20 , and then the installation body 20 is assembled on the frame 1 .

Of course, the components in the crank drive mechanism 2 can also be assembled on the frame 1, not limited to the above-mentioned pre-assembled as a whole.

The slider mechanism 3 in the utility model includes a slider body 31, the bottom of the slider body 31 is slidably matched with the frame 1, and the slider body 31 is provided with a slide rail positioning part 32 for positioning the outer surface of the seat slide rail. rails. Usually, the outer slide rail is pre-processed with a fixed structure that is installed in cooperation with the vehicle frame. In order to minimize the processing of the structure on the outer slide rail of the seat, the slide rail positioning component 32 can be installed in cooperation with the fixed structure. That is to say, the slide rail positioning component 32 is processed with a structure matched with the fixing structure.

The slider mechanism 3 may further include a connecting rod 33 , through which the end of the slider body 31 is connected to the cam 21 , so that the slider body 31 slides reciprocally relative to the frame 1 under the rotation of the cam 21 . That is, the slide body 31 is slidably supported on the frame 1 .

When the high-speed running-in machine is working, the rotating shaft in the crank drive mechanism 2 drives the cam 21 to rotate, and the cam 21 drives the slider body to slide relative to the frame 1 through the connecting rod 33, and then is positioned outside the slider body 31 by the slide rail positioning part 32. The slide rail also slides linearly back and forth relative to the fixed inner slide rail.

Compared with driving the inner slide rail to slide in the prior art, in the grinding machine provided by the utility model, the outer slide rail is positioned on the slide body 31 through the slide rail positioning part 32, and the outer slide rail is driven to reciprocate relative to the inner slide rail , because the inner slide rail fits inside the outer slide rail, the slide rail positioning part 32 can be connected to any position of the outer wall of the outer slide rail, not limited to the end, and can be connected to the middle of the outer wall of the outer slide rail, etc., and the connection area The corresponding ratio is relatively large, so that the sliding force applied by the crank drive mechanism 2 on the outer slide rail through the slide body 31 can also be close to the middle part of the outer slide rail, so as to avoid the torque on the outer slide rail, improve the sliding stability of the outer slide rail, and improve the stability of the outer slide rail. The running-in quality between the outer slide rail and the inner slide rail is improved.

The fixing method of the inner sliding rail will not be introduced in this article, and the fixing method of the inner sliding rail is not limited, and it does not hinder the understanding and implementation of the technical solution herein by those skilled in the art.

The design principle of the slider mechanism 3 in the utility model is: the weight of the slider mechanism 3 is light enough to meet normal running-in requirements.

In a specific implementation manner, the slider body 31 can be a flat plate structure. Under the premise of satisfying the strength and rigidity of use, the weight of the flat plate structure can be as light as possible. In a specific use environment, the thickness of the flat plate structure can be approximately It is 8mm-10mm, and multiple oblong weight-reducing holes can be added to the plate structure.

Both ends of the lower surface of the above-mentioned flat plate structure are provided with slide rails 3a extending longitudinally at both ends, and the upper surface of the frame 1 is fixed with longitudinal guide rails 1a, and the longitudinal guide rails 1a cooperate with each slide rail 3a to slide. In the utility model, the sliding rails on the flat structure are arranged in a segmented form instead of a continuous form, mainly considering reducing the weight of the flat structure on the premise of realizing stable sliding.

Wherein the longitudinal guide rail 1a can be installed on the guide rail mounting base 11, and the guide rail mounting base 11 is installed on the frame.

Specifically, the slider mechanism 3 may also include a support 34. The support 34 includes a horizontal plate 341 and a vertical plate 342 forming a right-angle structure. Both ends of the horizontal plate 341 have L-shaped legs 343 bent inward. The bottom surface of the leg 343 and the bottom surface of the stand plate 342 together form a support surface for being fixed on the top surface of the sliding seat body 31 . That is to say, the support 34 is fixed in contact with the slider body 31 through the lower surface of the vertical plate and the bent surface of the L-shaped leg 343 , which can improve the positioning reliability of the support 34 . Specifically, the support 34 can be fixed on the slider body 31 by means of screws and clamping, for example, the screws are set on the bending surface of the L-shaped leg 343, and the bending surface of the L-shaped leg is also provided with a locking block 344. , the slider body 31 is provided with a slot that is engaged and fixed with the block 344 . Of course, the support 34 can also be fixed on the slide body 31 by spot welding.

In order to reduce the weight of the slider mechanism 3 as much as possible, a plurality of lightening holes can be provided on the vertical surfaces of the vertical plate and the L-shaped legs. Similarly, the connecting rod 33 and the support 34 are respectively provided with a lightening hole 33a and a lightening hole 34a.

The faster the servo motor 22 rotates, the higher the requirement for the motion stability of the system connected to it. In particular, the reliability of the connection between the two parts that have a connection relationship is related to the stability and running-in efficiency of the entire system. In a specific running-in method, taking the rotational speed of the camshaft as 500r/min as an example, a stable and reliable system is introduced below.

One end of the slide body 31 is provided with a mounting hole, and a connecting column 35 is installed in the mounting hole, and a bearing is installed on the shaft section where the connecting column 35 stretches out of the mounting hole, and the connecting rod 33 is mounted on the connecting column 35 by a bearing sleeve 243 . That is to say, the connecting rod 33 realizes the rotation in the horizontal plane through the bearing and the connecting column 35 . The connecting column 35 can be fixed inside the mounting hole by means of a pin, a screw, or an interference fit.

In order to achieve the reliability of the longitudinal position of the bearing installation, in a specific embodiment, the slider mechanism 3 can also include a first collar 391 and a second collar 392, and the first collar 391 is installed in the connection hole of the connecting rod 33 Inside 332 , the second collar 392 is mounted on the outer peripheral wall of the connecting column 35 . The bearing is limited between the first collar 391 and the second collar 392 .

Specifically, the connecting hole at the end of the connecting rod 33 is a stepped hole, the large diameter section and the small diameter section form a stepped surface, the large diameter section is located below, the bearing is installed in the large diameter section, and the upper end surface of the bearing is against the stepped surface of the through hole. Above, the first collar 391 is disposed at the opening position of the large-diameter section.

As can be seen from the above description, the lower end of the connecting column 35 is fixed inside the mounting hole, and a bearing 38 is installed on the shaft section extending to the mounting hole, and the connecting rod 33 rotates relative to the connecting column 35 through the bearing. During the running-in process, the connecting rod 33 exerts a certain radial force on the connecting column 35 . The connecting column 35 is equivalent to a cantilever beam structure. The stability of the balance condition of the cantilever beam structure is poor. In the same load transmission, the shaft of the cantilever beam structure is prone to mechanical fatigue.

In order to improve the stress condition of the connecting column 35 and increase the service life of the connecting column 35, the following settings are also made in this paper.

The upper end of the connecting column 35 in each of the above-mentioned embodiments is fixedly connected to the slider body 31 through a connector, that is, both ends of the connecting column 35 are fixed to the slider body 31, and the lower end is fixed to the mounting hole of the slider body 31 Inside, the upper end is fixed to the slider body 31 through a connecting piece, and the bearing is located between the upper end and the lower end of the connecting column 35 . In this way, both the upper end and the lower end of the connecting column 35 are fixed to the slider body 31, which is equivalent to a simply supported beam structure, which greatly improves the stress of the connecting column 35 and improves the service life of the connecting column 35.

There are many ways to fix the upper end of the connecting column 35 and the slider body 31 , among which a specific implementation is given.

In a specific embodiment, the upper end surface of the connecting column 35 is provided with an upwardly opening installation groove, the connecting piece includes a Z-shaped piece 36 and a fixing pin 37, and the Z-shaped piece 36 includes a first transverse wall 361 and a second transverse wall 363 And the vertical wall 362 connecting the first transverse wall 361 and the second transverse wall 363, the first transverse wall 361 is provided with a through hole, and the fixing pin 37 is located in the through hole and the installation groove of the first transverse wall 361 at the same time, to fix the first transverse wall 361 In connection with the column 35; the second transverse wall 363 is provided with a matching structure fixed with the slider body 31, and the second transverse wall 363 can be fixed with the slider body 31 by screws, bolts or welding.

The Z-shaped piece 36 can be a whole structure or a split structure, that is, the first transverse wall 361 , the second transverse wall 363 and the vertical wall 362 are independent components, and the three are connected by connecting parts. The figure shows a specific embodiment in which the Z-shaped member is a split structure, wherein the first transverse wall 361 is a separate component, and the second transverse wall 363 and the vertical arm 362 are an integral structure.

Of course, the connecting piece is not limited to the form of a Z-shaped piece, and can also be in other forms, as long as the upper end of the connecting column 35 and the sliding seat body 31 can be reliably connected.

In a specific embodiment, the fixing pin 37 includes a first shaft segment, a second shaft segment and a third shaft segment whose diameters are successively reduced. The third shaft section is interference fit with the through hole of the first transverse wall 361, and the third shaft section is interference fit with the installation groove.

Wherein, the two ends of the fixing pin are respectively provided with a first axial blind hole and a second axial blind hole; this can further reduce its weight.

The cam 21 and the slider mechanism 3 in the present application form a crank connecting rod 33 mechanism. In practice, this paper finds that the smaller the force on the connection position between the cam 21 and the rotating shaft, the more stable the overall structure of the system; the cam 21 and the connecting rod 33 The smaller the force on the connecting position, the safer and more reliable the connecting rod 33 is when it moves. Research has found that the smaller the mass of the slider mechanism 3 is, the smaller the force is on the connection position between the cam 21 and the rotating shaft and the connection position between the cam 21 and the connecting rod 33 .

Herein, the position, weight and shape of the center of mass of the cam 21 can be determined according to the weight of the slider mechanism 3, the rotational speed of the rotating shaft and the principle of dynamic balance.

The cam 21 will generate eccentric force during the movement, which will inevitably affect the camshaft and the output shaft of the servo motor 22. In order to slow down the influence of the eccentric force on the servo motor 22 when the cam 21 moves, the following settings are also made in this paper.

In a specific embodiment, the crank drive mechanism 2 may also include a double angular contact bearing assembly, and the camshaft 211 of the cam 21 is supported on the installation body 20 through the double angular contact bearing assembly, and the camshaft 211 is connected to a rotating shaft such as a motor output shaft. , the two can be connected by parts with damping function such as shaft coupling 28.

The double angular contact bearing assembly may specifically include a pair of double angular contact bearings, which are defined herein as the first double angular contact bearing 241 and the second double angular contact bearing 242 for the sake of simplicity in describing the technical solution. The two double angular contact bearings can balance the cam The eccentric force produced by 21 is automatically centered, which greatly slows down the influence of the eccentric force of the movement of the cam 21 on the camshaft and the output shaft of the servo motor 22.

Further, the double angular contact bearing assembly may further include a bearing sleeve 243 fixedly installed on the installation main body 20 . The first double angular contact bearing 241 and the second double angular contact bearing 242 are arranged inside the bearing sleeve 243, and a positioning sleeve 244 is also arranged between the first double angular contact bearing 241 and the second double angular contact bearing 242, and the positioning sleeve 244 Sleeved on the outer peripheral wall of the camshaft 211 and has a gap with the periphery of the camshaft 211 , the function of the positioning sleeve 244 is mainly to locate the longitudinal position between the first double angular contact bearing 241 and the second double angular contact bearing 242 .

Further, a first snap ring 261 and a second snap ring 262 are respectively fixed on both ends of the bearing sleeve 243 for limiting the axial positions of the first double angular contact bearing 241 and the second double angular contact bearing 242 respectively. Both the first snap ring 261 and the second snap ring 2622 are loosely fitted on the outer circumference of the camshaft 211 . That is to say, sufficient gaps are left in the circumferential direction between the first snap ring 261 and the camshaft 211 , and between the second snap ring 262 and the camshaft 211 , so as to prevent the rotation of the camshaft 211 from being affected by the first snap ring 261 and the second snap ring 262 .

In order to meet the requirement of high-speed rotation, a locking nut 263 is further provided on the camshaft 211 , and the locking nut 263 is located outside the bearing sleeve 243 to limit the lower limit position of the second double angular contact bearing 242 . This is beneficial to the reliability of fixing the second double angular contact bearing 242 .

Of course, in order to prevent the lock nut 263 from rotating in reverse, a retaining ring 264 may also be provided under the lock nut 263 to prevent the lock nut 263 from loosening.

In a specific embodiment, the workbench of the frame 1 is provided with a through hole, the installation body 20 is installed on the lower surface of the workbench, the output shaft of the servo motor 22 passes through the through hole of the workbench and is connected to the cam 21. Such arrangement is beneficial to the compact structure of the mechanism. The servo motor 22 can be connected to the camshaft 211 through a coupling 28 and a speed reducer 29 .

In the above-mentioned embodiments, the installation body 20 may also be provided with a sensor 27 , and an induction plate is installed on the camshaft 211 , and the sensor 27 cooperates with the induction plate to determine the control origin position of the servo motor 22 . The induction plate can be flexibly arranged on the camshaft 211 .

The cam 21 includes a large end and a small end, the small end is provided with a connecting hole, and a connecting column 23 is installed inside the connecting hole, and a deep groove ball bearing 25 is installed on the connecting column 23, and one end of the connecting rod 33 passes through the deep groove ball bearing. 25 is connected to the connecting column 23. That is, the corresponding end of the connecting rod 33 is provided with a connecting hole 331 , and the connecting hole 331 is sleeved on the connecting post 23 , and the deep groove ball bearing 25 is disposed between the connecting hole 331 and the connecting post 23 .

The upper and lower ends of the connecting column 23 located at the deep groove ball bearing 25 can be provided with retaining rings 251 for limiting the up and down positions of the deep groove ball bearing 25 .

Specifically, the connecting hole on the cam 21 can be a stepped hole, which includes two sections from top to bottom: a large diameter section and a small diameter section, the large diameter section and the small diameter section form a stepped surface, and the top to bottom connecting column 23 includes a bearing installation section , a flange segment and a mounting segment, the flange segment leans against the step surface, and the mounting segment is accommodated inside the small diameter segment.

Further, a retaining ring for positioning the lower limit position of the deep groove ball bearing 25 may also be provided on the connecting column 23 .

In addition, the above-mentioned cam 21 can also be provided with a mounting hole, and a keyway is symmetrically arranged in the mounting hole, and the upper end of the camshaft 211 is connected to the keyway through a corresponding key structure, and the shaft section of the camshaft 211 positioned outside the mounting hole has an annular flange. 21 is supported and fixed on the annular flange, and the cam 21 and the annular flange can be fixed by screws or studs.

The symmetrically arranged key structure is conducive to improving the stability of the movement of the cam 21, thereby improving the overall stability of the system.

On the basis of the above-mentioned running-in machine, the utility model also provides a control method for the running-in machine used for the running-in of the slide rail of the car seat, and the method is specifically as follows:

The crank drive mechanism 2 and the slider mechanism 3 are pre-assembled and installed on the frame 1, the outer slide rail is positioned on the slider mechanism 3 and the inner slide rail is fixed;

The drive rotation shaft drives the cam 21 to rotate, and then drives the outer slide rail to slide back and forth relative to the inner slide rail, so as to realize the running-in between the inner slide rail and the outer slide rail.

The control method is based on the above-mentioned running-in machine, so it also has the above-mentioned technical effects of the running-in machine.

A running-in machine and a control method for running-in the slide rails of automobile seats provided by the utility model have been introduced above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (24)

1. A running-in machine for running-in of automobile seat slide rail is characterized in that, comprising frame (1), said frame (1) is provided with following parts: The crank drive mechanism (2) includes a cam connected to a rotating shaft, and the rotating shaft is vertically arranged; The slider mechanism (3) includes a slider body (31), the bottom of the slider body (31) is slidingly fitted with the frame (1), and the slider body (31) is provided with a slide rail for positioning The component (32) is used to locate the outer slide rail of the seat slide rail; the end of the slide body (31) is connected to the cam through a connecting rod (33), so that under the rotation of the cam, the The sliding seat body (31) slides reciprocally relative to the frame (1). 2. The running-in machine according to claim 1, characterized in that, the sliding seat body (31) is a flat plate structure, and two ends of the lower surface of the flat plate structure are provided with two sections of longitudinally extending slide rails, A longitudinal guide rail is fixed on the upper surface of the frame (1), and the longitudinal guide rail cooperates with each of the slide rails to slide. 3. The grinding machine according to claim 1, characterized in that, the slider mechanism (3) further comprises a support (34), and the support (34) comprises a transverse plate (341) forming a right-angle structure and The vertical plate (342), the two ends of the horizontal plate (341) have inwardly bent L-shaped legs (343), the bottom surface of the two L-shaped legs (343) and the lower surface of the vertical plate (342) The surfaces jointly form a support surface to be fixed on the upper surface of the slide body (31); and the vertical surfaces of the vertical plate (342) and the L-shaped leg (343) are all provided with a plurality of weight-reducing holes ( 34a). 4. The running-in machine according to claim 3, characterized in that, the bending surface of the L-shaped leg (343) is further provided with a block (344), and the slider body (31) is provided with a The clamping block (344) is clamped into the fixed clamping slot. 5. The running-in machine according to claim 1, characterized in that, one end of the slider body (31) is provided with a mounting hole, and a connecting column (35) is fixed in the mounting hole, and the connecting column (35) ) protruding from the shaft section of the mounting hole, a bearing is installed, and the connecting rod (33) is mounted on the connecting column through the bearing sleeve (243). 6. The grinding machine according to claim 5, characterized in that, the slider mechanism (3) further comprises a first collar (391) and a second collar (392), and the first collar (391 ) is installed on the inner wall of the connection hole of the connecting rod (33), the second collar (392) is installed on the outer peripheral wall of the connecting column (35); the bearing (38) is limited to the first clamp between the collar (391) and the second collar (392). 7. The running-in machine according to claim 5 or 6, characterized in that, the upper end of the connecting column (35) is fixedly connected with the slider body (31) through a connecting piece. 8. The grinding machine according to claim 7, characterized in that, the upper end surface of the connecting column is provided with an upwardly opening mounting groove, and the connecting piece includes a Z-shaped piece (36) and a fixing pin (37), The Z-shaped piece (36) includes a first transverse wall (361), a second transverse wall (363) and a vertical wall (362) connecting the first transverse wall (361) and the second transverse wall (363), the first transverse wall (363) A through hole is provided on a transverse wall (361), and the fixing pin (37) is simultaneously arranged in the through hole of the first transverse wall (361) and inside the installation groove to fix the first transverse wall (361) On the connecting column (35); the second transverse wall (363) is provided with a matching structure fixed with the slider body (31). 9. The grinding machine according to claim 8, characterized in that, from top to bottom, the fixed pin (37) includes a first shaft segment, a second shaft segment and a third shaft segment whose diameters are successively reduced, so that The first shaft section is clamped on the outside of the first transverse wall, the second shaft section is interference fit with the through hole of the first transverse wall, and the third shaft section is interference fit with the installation groove . 10. The grinding machine according to claim 8, characterized in that, the two ends of the fixing pin (37) are respectively provided with a first axial blind hole and a second axial blind hole. 11. The running-in machine according to any one of claims 1 to 6, characterized in that, the rod body of the connecting rod (33) is provided with several lightening holes. 12. The running-in machine according to claim 1, characterized in that, the position, weight and shape of the center of mass of the cam are determined according to the weight of the slider mechanism (3), the rotational speed of the rotating shaft and the principle of dynamic balance. 13. The running-in machine according to claim 12, characterized in that, the crank driving mechanism (2) includes a mounting body (20) and a double angular contact bearing assembly, and the camshaft (211) of the cam passes through the double angular contact bearing assembly. The angular contact bearing assembly is supported on the installation main body (20), the camshaft (211) is connected to the rotating shaft, and the installation main body (20) is also provided with a Install structure. 14. The running-in machine according to claim 13, characterized in that, the cam is provided with a mounting hole, and key grooves are symmetrically provided in the mounting hole, and the upper end of the camshaft (211) is connected to each other through a corresponding key structure. The keyway, and the shaft section of the camshaft (211) outside the installation hole has an annular flange, and the cam support is fixed on the annular flange. 15. The running-in machine according to claim 13, characterized in that, the double-angle contact bearing assembly includes a bearing sleeve (243), and first double-angle contact bearings (243) are sequentially arranged inside the bearing sleeve (243) from top to bottom. The contact bearing (241), the positioning sleeve (244) and the second double angular contact bearing (242), the bearing sleeve (243) is fixed to the installation main body (20). 16. The running-in machine according to claim 15, characterized in that, a first snap ring (261) and a second snap ring (262) are respectively fixed on the two ends of the bearing sleeve (243), which are respectively used for limiting The first double angular contact bearing (241) and the second double angular contact bearing (242), the first snap ring (261) and the second snap ring (262) are sleeved on the camshaft (211 ) of the periphery. 17. The running-in machine according to claim 16, characterized in that, the camshaft (211) is also provided with a lock nut (263), and the lock nut (263) is arranged on the bearing sleeve (243 ), used to define the lower limit position of the second double angular contact bearing (242). 18. The grinding machine according to any one of claims 13 to 17, characterized in that, the cam driving device specifically includes a servo motor (22), and the rotating shaft is an output shaft of the servo motor (22), The output shaft of the servo motor (22) is connected to the camshaft (211) through a coupling, and the housing of the servo motor (22) is installed on the installation body (20). 19. The running-in machine according to claim 18, characterized in that, the frame (1) includes a workbench, the workbench is provided with through holes, and the installation body (20) is installed on the workbench The lower surface of the lower surface, the output shaft of the servo motor (22) passes through the through hole of the workbench and is connected to the cam located above the workbench. 20. The running-in machine according to claim 18, characterized in that, a sensor (27) is also arranged on the installation main body (20), an induction plate is installed on the camshaft (211), and the sensor (27) ) cooperate with the induction plate to determine the control origin position of the servo motor (22). 21. The grinding machine according to claim 1, characterized in that, the cam is connected to the slider body (31) through a connecting rod, the cam includes a large end and a small end, and the small end is set Connecting hole is arranged, and connecting post (23) is installed in described connecting hole, and deep groove ball bearing is installed on connecting post (23), and one end of connecting rod is connected described connecting post (25) by described deep groove ball bearing (25). twenty three). 22. The running-in machine according to claim 21, characterized in that, the connecting hole is a stepped hole, comprising two sections from top to bottom: a large-diameter section and a small-diameter section, the large-diameter section and the small-diameter section form The step surface, from top to bottom, the connecting column (23) includes a bearing installation section, a flange section and a installation section, the flange section is against the step surface, and the installation section is accommodated inside the small diameter section . 23. The running-in machine according to claim 21, characterized in that, the connecting column (23) is also provided with a retaining ring for positioning the lower limit position of the deep groove ball bearing (25). 24. The running-in machine according to claim 1, characterized in that, the outer slide rail is pre-processed with a fixing structure cooperating with the vehicle frame, and the slide rail positioning part (32) is cooperatingly installed with the fixing structure.