Rotating plate type pneumatic chuck

Abstract

The utility model relates to a rotary plate type pneumatic chuck which comprises a chuck main body, a machine base and a driving mechanism, the chuck main body comprises a chuck front cover, four clamping jaw assemblies which are arranged on the chuck front cover and are arranged in a pairwise opposite mode, two rotary plates which are arranged on the rear side of the chuck front cover and are arranged side by side, and a driving air cylinder connected with the rotary plates. The same rotating plate is connected with the two clamping jaw assemblies arranged oppositely, and the driving air cylinders can drive the corresponding rotating plates to rotate so as to drive the two clamping jaw assemblies connected with the rotating plates to move in the face-to-face or back-to-back mode. The machine base is arranged on the rear side of the chuck body, and an air inlet channel correspondingly connected with the driving air cylinder is arranged in the machine base. The driving mechanism is installed on the machine base and can drive the chuck body to rotate. According to the utility model, the whole structure is simpler, the follow-up maintenance cost is low, the sealing difficulty and the probability of sealing failure are reduced, the situation that the clamping is not in place is effectively avoided, and the cutting quality of a workpiece is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic chucks, and in particular relates to a rotary plate type pneumatic chuck. Background Art

[0002] Laser cutting, as a fast and efficient processing method, has been widely used in various industrial fields. When cutting a workpiece, a laser cutting machine usually needs to use a matching chuck to clamp the workpiece to prevent the workpiece from loosening during the cutting process and affecting the laser cutting quality.

[0003] Most of the existing pneumatic chucks are of double-piston structure, that is, the same piston drives the movement of two relative jaw assemblies. The two pistons are arranged in the cylinder body of the chuck, one in front and one behind. The front ends of the pistons cooperate with the jaw assembly through a transmission structure such as a crank or a wedge block, and the cylinder body is provided with air passages corresponding to the two pistons to facilitate inward air intake to push the piston forward or backward, thereby driving the jaw assembly to clamp or release the workpiece.

[0004] The pneumatic chuck of this structure not only has a complex internal structure and high subsequent maintenance costs, but the piston is a moving part, and there are many sealing parts around it and in various parts of the airway, which makes sealing difficult. Any slight leakage at any position can easily cause the workpiece to be not clamped in place, which directly affects the cutting quality of the workpiece. Utility Model Content

[0005] The utility model aims to provide a rotary plate type pneumatic chuck to solve the problem of high sealing difficulty of the pneumatic chuck.

[0006] A rotary plate pneumatic chuck of the utility model is realized as follows:

[0007] A rotary plate pneumatic chuck, comprising

[0008] A chuck body, comprising a chuck front cover, four clamping jaw assemblies arranged on the chuck front cover and opposite to each other, two rotating plates arranged side by side at the rear of the chuck front cover, and a driving cylinder connected to the rotating plates, wherein the same rotating plate is connected to the two clamping jaw assemblies arranged opposite to each other, and the driving cylinder can drive the corresponding rotating plate to rotate, so as to drive the two clamping jaw assemblies connected to the rotating plate to move toward or away from each other;

[0009] A machine base, which is arranged at the rear side of the chuck body, and an air intake passage correspondingly connected to the driving cylinder is arranged in the machine base;

[0010] A driving mechanism is installed on the machine base and can drive the chuck body to rotate.

[0011] Furthermore, two connecting protrusions are provided on the periphery of the rotating plate to connect the corresponding two clamping jaw assemblies;

[0012] The connecting convex plate is provided with a connecting waist hole located in the circumferential direction and with one end inclined outward, and a connecting pin connected to the corresponding clamping jaw assembly is installed in the connecting waist hole;

[0013] The two connecting waist holes on the same rotating plate are arranged symmetrically to the center;

[0014] The chuck front cover is provided with a waist-shaped through hole located in its radial direction, and the connecting pin passes through the corresponding waist-shaped through hole.

[0015] Furthermore, each connecting convex plate is connected to a driving cylinder via an L-shaped connecting plate;

[0016] The driving cylinder is mounted on the rear side of the chuck front cover.

[0017] Furthermore, a front bearing seat is provided in the inner ring of the rotating plate, and a bearing I is installed between the front bearing seat and the rotating plate;

[0018] A bearing pressing ring connected to the front bearing seat is arranged on the rear side of the bearing I;

[0019] A dustproof sleeve connected to the bearing pressure ring is arranged at the rear side thereof.

[0020] Furthermore, a connecting seat connected to the machine base is provided on the rear side of the chuck front cover.

[0021] Furthermore, the machine base includes a disc body connected to the chuck body, and a machine base vertical plate arranged at the rear side of the disc body;

[0022] The air inlet passages are provided with two, and each of them includes a rear annular groove provided on the front side of the machine base vertical plate, and a front annular groove provided on the rear side of the plate body and corresponding to the rear annular groove, and the front annular groove is connected to a driving cylinder connected to the same rotating plate;

[0023] An air inlet interface communicating with the rear annular groove is arranged on the outer annular surface of the machine base vertical plate;

[0024] A sealing gasket is installed in the rear ring groove;

[0025] A through hole penetrating through the disc body is arranged in the front annular groove, and a front end of the through hole is connected to an air outlet interface located at the front side of the disc body.

[0026] Furthermore, a rear bearing seat is arranged inside the machine base vertical plate, and a bearing II is installed between the rear bearing seat and the machine base vertical plate, wherein the outer ring of the bearing II is connected to the machine base vertical plate, and the inner ring is connected to the rear bearing seat.

[0027] Furthermore, a rear flange connected to the rear bearing seat is provided on the rear side thereof, and the front side thereof is connected to the disc body.

[0028] Furthermore, the driving mechanism includes a driving motor, a driving gear connected to an output end of the driving motor, and a driven gear meshing with the driving gear and connected to a rear side of the rear flange.

[0029] Furthermore, a mounting plate is provided on the rear side of the machine base vertical plate, a mounting seat is provided on the rear side of the mounting plate, the driven gear is located in the mounting seat, and the driving motor is installed on the rear side of the mounting seat.

[0030] After adopting the above technical solution, the utility model has the following beneficial effects:

[0031] (1) The utility model drives the rotating plate to rotate by driving the cylinder to achieve the clamping or loosening of the workpiece by the clamping claw assembly. The overall structure is simpler and the subsequent maintenance cost is reduced;

[0032] (2) The utility model adopts a driving cylinder to directly drive the clamping jaw assembly to work, and there is no need to directly set a piston in the cylinder body, which correspondingly reduces the sealing requirements inside the pneumatic chuck, as well as the sealing difficulty and the probability of sealing failure, effectively avoiding the situation of inadequate clamping, ensuring the cutting quality of the workpiece, and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Figure 1 This is a structural diagram of a rotary plate pneumatic chuck according to a preferred embodiment of the utility model;

[0035] Figure 2 This is a structural diagram of a rotary plate pneumatic chuck according to a preferred embodiment of the utility model;

[0036] Figure 3 This is a front view of a rotary plate pneumatic chuck according to a preferred embodiment of the utility model;

[0037] Figure 4 yes Figure 3 Sectional view of the AA section;

[0038] Figure 5 yes Figure 3 Cross-section of the middle BB section;

[0039] Figure 6 yes Figure 5 Enlarged view of part C;

[0040] Figure 7 It is a structural diagram of the chuck body of the rotary plate type pneumatic chuck of the preferred embodiment of the utility model;

[0041] Figure 8This is a structural diagram of the chuck front cover of the rotary plate type pneumatic chuck of the preferred embodiment of the utility model;

[0042] Fig. 9 This is a structural diagram of a rotating plate of a rotating plate type pneumatic chuck according to a preferred embodiment of the utility model;

[0043] In the figure: chuck front cover 1, rotating plate 2, driving cylinder 3, slider 4, clamping claw 5, anti-wear strip 6, slide groove 7, connecting convex plate 8, connecting waist hole 9, connecting pin 10, waist-shaped through hole 11, L-shaped connecting plate 12, support column 13, front bearing seat 14, bearing I 15, bearing pressure ring 16, equal height block 17, dust sleeve 18, connecting seat 19, disk body 20, machine base vertical plate 21, rear annular groove 22, front annular groove 23, air inlet interface 24, sealing gasket 25, through hole 26, air outlet interface 27, rear bearing seat 28, bearing II 29, rear flange 30, drive motor 31, driving gear 32, driven gear 33, mounting plate 34, mounting seat 35, machine base bottom plate 36. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1-9 As shown, a rotary plate type pneumatic chuck includes a chuck body, a machine base and a driving mechanism, the chuck body includes a chuck front cover 1, four clamping jaw assemblies arranged on the chuck front cover 1 and arranged opposite to each other, two rotary plates 2 arranged at the rear side of the chuck front cover 1 and arranged side by side, and a driving cylinder 3 connected to the rotary plate 2, the same rotary plate 2 is connected to the two clamping jaw assemblies arranged opposite to each other, the driving cylinder 3 can drive the corresponding rotary plate 2 to rotate, so as to drive the two clamping jaw assemblies connected to the rotary plate 2 to move toward or away from each other; the machine base is arranged at the rear side of the chuck body, and an air intake passage corresponding to the driving cylinder 3 is arranged in the machine base; the driving mechanism is installed on the machine base, and can drive the chuck body to rotate.

[0047] The rotating plate 2 rotates to drive the two clamping jaw assemblies connected thereto to move, and the driving cylinder 3 provides power for the rotation of the rotating plate 2.

[0048] The clamping jaw assembly includes a slider 4 and a clamping jaw 5 mounted on the slider 4 .

[0049] Specifically, the clamping jaw 5 is connected to the slider 4 by bolts, and a rear tooth surface is provided at the edge of the front side of the slider 4, and a front tooth surface matching the rear tooth surface is also provided on the side opposite to the clamping jaw 5. The tooth surfaces cooperate with the slider 4 to prevent movement between the two, thereby ensuring stability when clamping the workpiece.

[0050] Preferably, an anti-wear strip 6 is provided on the inner side of the clamping jaw 5 to prevent the clamping jaw 5 from wearing the workpiece.

[0051] In order to facilitate the installation of the clamping jaw assembly, a sliding groove 7 for accommodating the sliding block 4 is provided on the front side of the chuck front cover 1 .

[0052] The cross section of the chute 7 is a "convex" shape, and the cross section of the slider 4 matches it, which can prevent the slider 4 from falling out of the chute 7.

[0053] In order to facilitate the connection between the rotating plate 2 and the clamping jaw assembly, two connecting protruding plates 8 are provided on the periphery of the rotating plate 2 to connect the corresponding two clamping jaw assemblies.

[0054] The rotation of the rotating plate 2 drives the clamping or loosening of the clamping jaw assembly. In order to achieve this effect, a connecting waist hole 9 located in the circumferential direction and with one end inclined outward is provided on the connecting convex plate 8. The two connecting waist holes 9 on the same rotating plate 2 are arranged symmetrically with respect to the center, and a connecting pin 10 connected to the corresponding clamping jaw assembly is installed in the connecting waist hole 9.

[0055] Specifically, the connecting waist hole 9 is located in the circumferential direction, with one end thereof tilted outwards and the other end tilted inwards.

[0056] Due to this inclined setting, if the rotating plate 2 rotates toward the inwardly inclined side of the connecting waist hole 9, the two clamping jaw assemblies connected to the rotating plate 2 move away from each other to loosen the workpiece; conversely, if the rotating plate 2 rotates toward the outwardly inclined side of the connecting waist hole 9, the two clamping jaw assemblies move toward each other to clamp the workpiece.

[0057] In this embodiment, the clockwise sides of the four connecting waist holes 9 are all ends inclined outwards, that is, when the rotating plate 2 rotates clockwise, the clamping jaw assembly moves inwards.

[0058] In order to ensure smooth fit between the connecting pin 10 and the connecting waist hole 9, a bearing is provided at the rear end of the connecting pin 10, and the connecting pin 10 is matched with the connecting waist hole 9 through the bearing.

[0059] The front end of the connecting pin 10 can be fixedly connected to the sliding block 4 by means of screws.

[0060] The connecting pin 10 moves in the radial direction of the chuck front cover 1 to drive the clamping jaw assembly to move inward or outward. In order to provide space for the movement of the connecting pin 10, the chuck front cover 1 is provided with a waist-shaped through hole 11 located in its radial direction, and the connecting pin 10 passes through the corresponding waist-shaped through hole 11.

[0061] In order to realize the connection between the driving cylinder 3 and the rotating plate 2 , each connecting protrusion 8 is connected to the driving cylinder 3 via an L-shaped connecting plate 12 .

[0062] In this embodiment, four driving cylinders 3 are provided, and are respectively connected to four connecting protruding plates 8 on two rotating plates 2 , and the four driving cylinders 3 are located on the counterclockwise side of the corresponding connecting protruding plates 8 .

[0063] When the piston rod of the driving cylinder 3 extends, it drives the rotating plate 2 to rotate clockwise, which can push each clamping jaw assembly to move inward to clamp the workpiece; when the piston rod of the driving cylinder 3 retracts, it drives the rotating plate 2 to rotate counterclockwise, which can drive each clamping jaw assembly to move outward to release the workpiece.

[0064] For the rotating plate 2 located on the front side, the L-shaped connecting plate 12 is connected to the rear side of the corresponding connecting protrusion 8; for the rotating plate 2 on the rear side, the L-shaped connecting plate 12 is connected to the front side of the corresponding connecting protrusion 8, which can make the internal structure of the chuck more compact and reduce its occupied space.

[0065] In order to realize the installation of the driving cylinder 3 , the driving cylinder 3 is installed on the rear side of the chuck front cover 1 .

[0066] A support column 13 is provided on the rear side of the chuck front cover 1, and the tail of the driving cylinder 3 is installed on the support column 13 through a bearing. While supporting the driving cylinder 3, it can also facilitate the angle adjustment of the driving cylinder 3 when it is extended and retracted, thereby making it more convenient to drive the rotating plate 2 to rotate.

[0067] In order to ensure the smooth rotation of the rotating plate 2 and reduce the wear of the inner ring of the rotating plate 2, a front bearing seat 14 is provided in the inner ring of the rotating plate 2, and a bearing I 15 is installed between the front bearing seat 14 and the rotating plate 2.

[0068] Two bearings I15 are installed outside a front bearing seat 14 to facilitate cooperation with the two rotating plates 2.

[0069] In order to fix the bearing I15, a bearing pressure ring 16 connected to the front bearing seat 14 is provided on the rear side of the bearing I15.

[0070] Preferably, an equal height block 17 fixed on the chuck front cover 1 is provided between the two connecting protruding plates 8 on the rear side and the chuck front cover 1 , which can ensure the stability of the rear side rotating plate 2 .

[0071] In order to prevent debris from entering the interior of the chuck during the cutting process, a dustproof sleeve 18 connected to the bearing pressure ring 16 is provided at the rear side thereof.

[0072] In order to realize the connection between the chuck body and the machine base, a connecting seat 19 connected to the machine base is arranged on the rear side of the chuck front cover 1 .

[0073] The front end of the connecting seat 19 is connected to the chuck front cover 1, and the rear end is connected to the machine base.

[0074] The machine base includes a chuck body 20 connected to the chuck body, and a machine base vertical plate 21 arranged at the rear side of the chuck body 20 .

[0075] The disk body 20 is fixedly connected to the connecting seat 19 .

[0076] The setting of the air intake passage is used to facilitate the air supply to the driving cylinder 3. The two driving cylinders 3 connected to the same rotating plate 2 use the same air intake passage. Therefore, there are two air intake passages, which respectively include a rear annular groove 22 set on the front side of the base plate 21, and a front annular groove 23 set on the rear side of the disk body 20 and corresponding to the rear annular groove 22. The front annular groove 23 is connected to the driving cylinder 3 connected to the same rotating plate 2.

[0077] In order to facilitate the connection of the air source, an air inlet interface 24 communicating with the rear annular groove 22 is provided on the outer annular surface of the machine base vertical plate 21 .

[0078] Because the machine base plate 21 is fixed, and the disc body 20 rotates with the chuck body, the two will rotate relatively. In order to ensure the sealing of the front ring groove 23 and the rear ring groove 22, a sealing gasket 25 is installed in the rear ring groove 22.

[0079] Specifically, the cross-section of the rear annular groove 22 is a "convex" shape, which is convenient for installing the sealing gasket 25 and cooperates with the sealing gasket 25 to ensure the sealing effect, and each front annular groove 23 is located between two annular protrusions.

[0080] The front side of the sealing gasket 25 is provided with a boss extending forward, an air intake interface 24 and a rear annular groove 22 on the rear side of the sealing gasket 25. When the gas enters the rear annular groove 22, the gas will push the sealing gasket 25 forward, so that the front side of the gasket will be tightly attached to the outer convex inner wall of the rear annular groove 22, and the boss will be tightly attached to the annular protrusions on both sides of the front annular groove 23. At this time, the gas will enter the front annular groove 23 through the air holes on the sealing gasket 25, and ensure the sealing during the air intake process to avoid air leakage.

[0081] In order to facilitate the connection with the driving cylinder 3 , a through hole 26 penetrating the disc body 20 is provided in the front annular groove 23 , and the front end of the through hole 26 is connected to an air outlet interface 27 located at the front side of the disc body 20 .

[0082] The driving cylinders 3 can be connected to the corresponding air outlet interfaces 27 via air pipes, thereby achieving communication of the air paths of the driving cylinders 3 .

[0083] In order to drive the rotation of the chuck body through the driving mechanism, a rear bearing seat 28 is arranged inside the machine base plate 21, and a bearing II 29 is installed between the rear bearing seat 28 and the machine base plate 21. The outer ring of the bearing II 29 is connected to the machine base plate 21, and the inner ring is connected to the rear bearing seat 28.

[0084] In order to facilitate the transmission of the torque of the driving mechanism to the chuck body, a rear flange 30 connected to the rear bearing seat 28 is provided at the rear side thereof, and the front side is connected to the chuck body 20 .

[0085] In order to drive the chuck body to rotate, the driving mechanism includes a driving motor 31 , a driving gear 32 connected to the output end of the driving motor 31 , and a driven gear 33 meshing with the driving gear 32 and connected to the rear side of the rear flange 30 .

[0086] The driving motor 31 drives the driving gear 32 to rotate, the driving gear 32 drives the driven gear 33 to rotate, and the driven gear 33 drives the rear flange 30, the rear bearing seat 28 and the disc body 20 to rotate synchronously in turn, and then drives the entire chuck body to rotate through the disc body 20.

[0087] In order to facilitate the installation of the driving mechanism, a mounting plate 34 is provided on the rear side of the machine base plate 21 , a mounting seat 35 is provided on the rear side of the mounting plate 34 , the driven gear 33 is located in the mounting seat 35 , and the driving motor 31 is installed on the rear side of the mounting seat 35 .

[0088] Preferably, in order to facilitate the placement of the pneumatic chuck, a base bottom plate 36 is provided at the bottom of the base vertical plate 21 .

[0089] When laser cutting a workpiece, the workpiece is placed in the inner hole of the pneumatic chuck, the two air inlet passages are connected to the air source, the piston rod of the driving cylinder 3 is extended, thereby driving the two pairs of jaw assemblies to move relative to each other, thereby clamping the workpiece, and the pneumatic drive motor 31 drives the entire chuck body and the workpiece to rotate, and the laser cutting machine can be used to cut the workpiece. The whole process is simple and convenient, and the cutting quality of the workpiece is effectively guaranteed.

[0090] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A rotary plate pneumatic chuck, characterized in that: include A chuck body, comprising a chuck front cover (1), four clamping jaw assemblies arranged on the chuck front cover (1) and arranged opposite to each other in pairs, two rotating plates (2) arranged on the rear side of the chuck front cover (1) and arranged side by side, and a driving cylinder (3) connected to the rotating plate (2), wherein the same rotating plate (2) is connected to the two clamping jaw assemblies arranged opposite to each other, and the driving cylinder (3) can drive the corresponding rotating plate (2) to rotate, so as to drive the two clamping jaw assemblies connected to the rotating plate (2) to move towards or away from each other; A machine base, which is arranged on the rear side of the chuck body, and an air intake passage correspondingly connected to the driving cylinder (3) is arranged in the machine base; A driving mechanism is installed on the machine base and can drive the chuck body to rotate.

2. The rotary plate pneumatic chuck according to claim 1, characterized in that: The outer periphery of the rotating plate (2) is provided with two connecting protruding plates (8) for connecting the corresponding two clamping jaw assemblies; The connecting convex plate (8) is provided with a connecting waist hole (9) located in the circumferential direction and with one end inclined outward, and a connecting pin (10) connected to the corresponding clamping jaw assembly is installed in the connecting waist hole (9); The two connecting waist holes (9) on the same rotating plate (2) are arranged in a centrally symmetrical manner; The chuck front cover (1) is provided with a waist-shaped through hole (11) located in its radial direction, and the connecting pin (10) passes through the corresponding waist-shaped through hole (11).

3. The rotary plate pneumatic chuck according to claim 2, characterized in that: Each connecting convex plate (8) is connected to a driving cylinder (3) via an L-shaped connecting plate (12); The driving cylinder (3) is mounted on the rear side of the chuck front cover (1).

4. The rotary plate pneumatic chuck according to claim 1, characterized in that: A front bearing seat (14) is arranged in the inner ring of the rotating plate (2), and a bearing I (15) is installed between the front bearing seat (14) and the rotating plate (2); A bearing pressing ring (16) connected to the front bearing seat (14) is arranged on the rear side of the bearing I (15); The rear side of the bearing pressure ring (16) is provided with a dustproof sleeve (17) connected thereto.

5. The rotary plate pneumatic chuck according to claim 1, characterized in that: A connecting seat (19) connected to the machine base is arranged on the rear side of the chuck front cover (1).

6. The rotary plate pneumatic chuck according to claim 1, characterized in that: The machine base comprises a disc body (20) connected to the chuck body, and a machine base vertical plate (21) arranged at the rear side of the disc body (20); The air intake passages are provided with two, and respectively include a rear annular groove (22) provided on the front side of the machine base vertical plate (21), and a front annular groove (23) provided on the rear side of the disk body (20) and corresponding to the rear annular groove (22), wherein the front annular groove (23) is connected to a driving cylinder (3) connected to the same rotating plate (2); An air intake interface (24) communicating with the rear annular groove (22) is provided on the outer annular surface of the machine base vertical plate (21); A sealing gasket (25) is installed in the rear annular groove (22); A through hole (26) penetrating the disc body (20) is provided in the front annular groove (23), and a front end of the through hole (26) is connected to an air outlet interface (27) located at the front side of the disc body (20).

7. The rotary plate pneumatic chuck according to claim 6, characterized in that: A rear bearing seat (28) is arranged inside the machine base vertical plate (21), and a bearing II (29) is installed between the rear bearing seat (28) and the machine base vertical plate (21). The outer ring of the bearing II (29) is connected to the machine base vertical plate (21), and the inner ring is connected to the rear bearing seat (28).

8. The rotary plate pneumatic chuck according to claim 7, characterized in that: The rear side of the rear bearing seat (28) is provided with a rear flange (30) connected thereto, and the front side is connected to the disc body (20).

9. The rotary plate pneumatic chuck according to claim 8, characterized in that: The driving mechanism comprises a driving motor (31), a driving gear (32) connected to the output end of the driving motor (31), and a driven gear (33) meshing with the driving gear (32) and connected to the rear side of the rear flange (30).

10. The rotary plate pneumatic chuck according to claim 9, characterized in that: A mounting plate (34) is arranged on the rear side of the machine base vertical plate (21), a mounting seat (35) is arranged on the rear side of the mounting plate (34), the driven gear (33) is located in the mounting seat (35), and the driving motor (31) is mounted on the rear side of the mounting seat (35).

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