Riveting structure for rear cover of brake-by-wire master cylinder

Abstract

The utility model relates to a line control brake master cylinder rear cover riveting structure which comprises a valve block and a master cylinder rear cover, an oil way hole is formed in the valve block in a penetrating mode, a deformation ring table is formed on the inner wall of the oil way hole, and the master cylinder rear cover is inserted into the oil way hole from top to bottom in a matched mode. A riveting ring table which is matched with the deformation ring table and enables the deformation ring table to deform is arranged on the side wall of the main cylinder rear cover, and a ring groove which is connected with the riveting ring table and allows the deformed deformation ring table to enter is formed in the side wall of the main cylinder rear cover. According to the utility model, the technical problems that the existing assembly mode is relatively complicated, the assembly in place cannot be ensured, and the assembly cost is relatively high can be solved, and pressure bearing and sealing can be realized at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, in particular to a riveting and pressing structure for the rear cover of a master cylinder for wire control braking. Background Art

[0002] When a vehicle brakes, the rear cover of the master cylinder of an integrated wire control brake needs to bear the hydraulic pressure of the master cylinder. In the prior art, the sealing of the rear cover of the master cylinder is generally realized by means of a threaded bushing or a wire snap ring to bear the pressure of the rear cover of the master cylinder, and then an O-ring is used to seal the brake fluid; this assembly method is complex, and it is impossible to ensure and detect whether the assembly is in place, and the assembly cost is relatively high. Summary of the Utility Model

[0003] Aiming at the technical problems of the relatively complex existing assembly method, inability to ensure the assembly in place, and relatively high assembly cost, the utility model provides a riveting and pressing structure for the rear cover of a master cylinder for wire control braking, which can simultaneously realize pressure bearing and sealing.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A riveting and pressing structure for the rear cover of a master cylinder for wire control braking, comprising a valve block and a rear cover of the master cylinder. The valve block is provided with an oil passage hole in a penetrating manner, and a deformed annular platform is formed on the inner wall of the oil passage hole. The rear cover of the master cylinder is inserted into the oil passage hole from top to bottom in a matching manner, and a riveting annular platform is provided on the side wall of the rear cover of the master cylinder, which is matched with the deformed annular platform and deforms the deformed annular platform. A ring groove is formed on the side wall of the rear cover of the master cylinder, which connects the riveting annular platform and allows the deformed annular platform to enter.

[0006] The beneficial effect of the utility model is that during assembly, pressure is applied to the rear cover of the master cylinder to make it enter the oil passage hole. During the process of gradually applying pressure, the riveting annular platform abuts against the deformed annular platform and deforms the deformed annular platform. The deformed part of the deformed annular platform enters and is clamped in the ring groove, forming a riveting, sealing and pressure-bearing structure, completing the riveting operation of the valve block and the rear cover of the master cylinder. The assembly method is simple and fast. The pressure bearing of the rear cover of the master cylinder is changed from a threaded bushing or a wire snap ring structure to a riveting structure, and the sealing is changed from an O-ring to a riveting seal, reducing the number of parts and improving the technical problems of the relatively complex existing assembly method, inability to ensure the assembly in place, and relatively high assembly cost.

[0007] On the basis of the above technical solution, the utility model can be further improved as follows.

[0008] Further, the stepped surface of the riveting annular platform is an upper inclined surface structure, and one end connected to the ring groove is inclined upward.

[0009] The beneficial effects of adopting the above further solution are as follows: when pressure is applied to the rear cover of the master cylinder so that the rear cover of the master cylinder is riveted to the valve block, the upper inclined surface structure of the riveting ring platform presents a downward cutting state relative to the deformed ring platform, which helps the deformed ring platform to deform rapidly and form a riveting structure.

[0010] Further, the bottom of the annular groove is an arc-shaped groove structure.

[0011] The beneficial effects of adopting the above further solution are as follows: it helps the deformed ring platform to deform and fill the annular groove, and at the same time, the arc structure is smoother, and the annular groove is used to form a sealing effect.

[0012] Further, the groove wall of the annular groove away from the riveting ring platform is a downward inclined lower inclined surface structure.

[0013] The beneficial effects of adopting the above further solution are as follows: it is convenient for the deformed ring platform to deform and fill the annular groove, and helps to bear the hydraulic pressure.

[0014] Further, a buffer groove connecting the riveting ring platform is provided on the side wall of the rear cover of the master cylinder.

[0015] The beneficial effects of adopting the above further solution are as follows: when the deformed ring platform deforms and fills the annular groove, the adjacent part of the deformed ring platform deforms and can be filled in the buffer groove, ensuring the sealing effect of the riveting structure.

[0016] Further, a guiding surface connecting the buffer groove is provided on the side wall of the rear cover of the master cylinder.

[0017] The beneficial effects of adopting the above further solution are as follows: when the rear cover of the master cylinder is placed in the oil passage hole of the valve block, a guiding effect is formed by using the guiding surface to ensure the rapid placement of the rear cover of the master cylinder.

[0018] Further, a receiving ring platform located below the deformed ring platform is further provided on the inner wall of the oil passage hole, and the receiving ring platform is located on the lower side of the rear cover of the master cylinder.

[0019] The beneficial effects of adopting the above further solution are as follows: to form a receiving effect on the downward riveting of the rear cover of the master cylinder, preventing the rear cover of the master cylinder from being pressed down excessively and causing damage to the riveting structure.

[0020] Further, the lower end of the rear cover of the master cylinder is adaptively inserted into the oil passage hole from top to bottom, and the upper end extends out of the oil passage hole.

[0021] The beneficial effects of adopting the above further solution are as follows: to ensure that sufficient pressure can be applied to the rear cover of the master cylinder to achieve full riveting of the rear cover of the master cylinder.

[0022] Further, the oil passage hole is a circular stepped hole structure, and the rear cover of the master cylinder is a stepped shaft-shaped structure that matches it.

[0023] The beneficial effect of adopting the above further solution is: setting it as a stepped shaft structure can ensure the uniformity of the force applied to each part of the deformation ring, and ensure the sealing and stability of the riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an installation diagram of the riveting structure of the rear cover of the master cylinder for wire control of the present invention, showing the state where the riveting ring is in contact with the rear cover of the master cylinder, and the arrow in the figure indicates the riveting direction of the rear cover of the master cylinder;

[0025] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0026] Figure 3 It is a riveting deformation flow chart of the riveting structure of the rear cover of the master cylinder for wire control braking of the utility model;

[0027] Figure 4 It is a partial enlarged view of the rear cover of the master cylinder of the utility model;

[0028] Figure 5 This is an installation diagram of the riveting structure of the master cylinder rear cover for wire-controlled braking of the present invention, showing the riveted state of the master cylinder rear cover and the valve block.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Valve block; 11. Oil passage hole; 12. Deformation ring stage; 13. Receiver ring stage; 2. Main cylinder rear cover; 3. Riveted ring stage; 4. Ring groove; 5. Buffer groove; 6. Guide surface. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] Example 1

[0033] like Figures 1 to 5 A riveting structure for a master cylinder rear cover for wire control braking includes a valve block 1 and a master cylinder rear cover 2. The valve block 1 is provided with an oil passage hole 11, and a deformation ring stage 12 is formed on the inner wall of the oil passage hole 11. The master cylinder rear cover 2 is adapted to be inserted into the oil passage hole 11 from top to bottom, and a riveting ring stage 3 that cooperates with the deformation ring stage 12 and deforms the deformation ring stage 12 is provided on the side wall of the master cylinder rear cover 2. An annular groove 4 is provided on the side wall of the master cylinder rear cover 2, which is connected to the riveting ring stage 3 and allows the deformed deformation ring stage 12 to enter.

[0034] The beneficial effects of this embodiment are as follows: during assembly, pressure is applied to the master cylinder rear cover 2 to make it enter the oil passage hole 11, and in the process of gradually applying pressure, the riveting ring stage 3 abuts against the deformation ring stage 12 and causes the deformation ring stage 12 to deform, until the deformed part of the deformation ring stage 12 enters and is clamped in the ring groove 4, forming a riveted, sealed and pressure-bearing structure, completing the riveting operation of the valve block 1 and the master cylinder rear cover 2, and the assembly method is simple and fast. The master cylinder rear cover 2 is changed from a threaded sleeve or a wire clamp ring structure to a riveted structure, and the seal is changed from an O-ring to a riveted seal, reducing the number of parts and improving the technical problems of the existing assembly method being relatively complex, unable to ensure proper assembly, and having a relatively high assembly cost.

[0035] like Figure 3 During the riveting process, part a of the valve block 1 is deformed and squeezed into the annular groove 4.

[0036] By adopting the above solution, the master cylinder rear cover 2 is changed from a threaded sleeve or wire clamp ring pressure-bearing structure to a riveted structure, and the seal is changed from an O-ring to a riveted seal, thereby reducing the number of parts.

[0037] During the assembly process, there is no need to pre-install screw sleeves or clamps, nor is there any need to pre-install O-rings. They can be directly riveted into place, which simplifies the process, shortens the working hours, and makes the tooling structure simpler.

[0038] During the assembly process, the press-fitting force and the press-fitting displacement are monitored. When the press-fitting displacement reaches the target value, the press-fitting resistance will suddenly increase (when the riveting ring 3 initially abuts against the deformation ring 12), making it easier to control the process quality.

[0039] Example 2

[0040] like Figures 1 to 4 On the basis of Example 1, the step surface of the riveting ring platform 3 is an upper inclined surface structure, and one end thereof connected to the annular groove 4 is inclined upward. The upper inclined surface structure forms an angle C relative to the horizontal plane, and the angle C is an acute angle, which can be 3°, 5°, 7°, 10°, etc.

[0041] The beneficial effect of adopting the preferred scheme in the above embodiment is that when pressure is applied to the master cylinder rear cover 2 so that the master cylinder rear cover 2 is riveted to the valve block 1, the upper inclined surface structure of the riveting ring 3 is in a downcut state relative to the deformation ring 12, forming a blade angle, which helps the deformation ring 12 to deform quickly and form a riveted structure.

[0042] At the same time, the upper inclined surface structure forms a tie structure relative to the local structure of the deformed ring platform 12 that is deformed and enters the ring groove 4, thereby improving the riveting stability.

[0043] Example 3

[0044] like Figures 1 to 4, on the basis of Embodiments 1 and 2, the bottom of the annular groove 4 is an arc-shaped groove structure. A fillet R is formed at the bottom of the groove.

[0045] The beneficial effect of adopting the preferred solution in the above embodiment is that it helps the deformable annular platform 12 to deform and fill the annular groove 4. At the same time, the arc-shaped structure is smoother, and the annular groove 4 is used for sealing.

[0046] Embodiment 4

[0047] As Figures 1 to 4 , on the basis of Embodiments 1-3, the groove wall of the annular groove 4 far from the riveting annular platform 3 is a downward-inclined lower inclined surface structure, and forms an angle d with respect to the vertical plane. The angle d is an acute angle, and it can be 3°, 5°, 7°, 10°, etc.

[0048] The beneficial effect of adopting the preferred solution in the above embodiment is that it is convenient for the deformable annular platform 12 to deform and fill the annular groove 4, and helps to bear the liquid pressure.

[0049] The upper inclined surface structure and the lower inclined surface structure form a flared structure, which can increase the possibility of the deformable annular platform 12 deforming and filling the annular groove 4.

[0050] Embodiment 5

[0051] As Figures 1 to 5 , on the basis of Embodiments 1-4, a buffer groove 5 connecting the riveting annular platform 3 is provided on the side wall of the main cylinder rear cover 2.

[0052] The beneficial effect of adopting the preferred solution in the above embodiment is that when the deformable annular platform 12 deforms and fills the annular groove 4, the adjacent part of the deformable annular platform 12 deforms and can be filled in the buffer groove 5, ensuring the sealing effect of the riveting structure.

[0053] As a specific solution of the above embodiment, the buffer groove 5 can be a right-angle groove.

[0054] Embodiment 6

[0055] As Figures 1 to 5 , on the basis of Embodiments 1-5, a guiding surface 6 connecting the buffer groove 5 is provided on the side wall of the main cylinder rear cover 2, and the guiding surface 6 is an upward-inclined inclined surface.

[0056] The beneficial effect of adopting the preferred solution in the above embodiment is that when the main cylinder rear cover 2 is placed in the oil passage hole 11 of the valve block 1, the guiding surface 6 forms a guiding effect to ensure the quick placement of the main cylinder rear cover 2.

[0057] Embodiment 7

[0058] As Figures 1 to 5 , on the basis of Embodiments 1-6, a receiving annular platform 13 is further provided on the inner wall of the oil passage hole 11 below the deformable annular platform 12, and the receiving annular platform 13 is located below the main cylinder rear cover 2.

[0059] The beneficial effect of adopting the preferred solution in the above embodiment is that the downward riveting of the rear cover 2 of the master cylinder forms a bearing effect, preventing the rear cover 2 of the master cylinder from being pressed down excessively and causing damage to the riveting structure.

[0060] Embodiment 8

[0061] Such as Figure 1 and Figure 2 , on the basis of Embodiments 1-7, the lower end of the rear cover 2 of the master cylinder is adaptively inserted into the oil passage hole 11 from top to bottom, and the upper end extends out of the oil passage hole 11.

[0062] The beneficial effect of adopting the preferred solution in the above embodiment is that sufficient pressure can be applied to the rear cover 2 of the master cylinder to achieve sufficient riveting of the rear cover 2 of the master cylinder.

[0063] Embodiment 9

[0064] Such as Figure 1 and Figure 2 , on the basis of Embodiments 1-8, the oil passage hole 11 is a circular stepped hole structure, and the rear cover 2 of the master cylinder is a stepped shaft-like structure that matches it.

[0065] The beneficial effect of adopting the preferred solution in the above embodiment is that by setting it as a stepped shaft-like structure, the force uniformity of each part of the deformation ring platform 12 during deformation can be ensured, and the sealing performance and stability of the riveting can be guaranteed.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0067] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0068] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0069] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0071] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A riveting structure for the rear cover of the master cylinder for wire control applications, comprising a valve block (1) and a rear cover (2) of the master cylinder, characterized in that, The valve block (1) is provided with an oil passage hole (11) running through it. A deformed ring platform (12) is formed on the inner wall of the oil passage hole (11). The rear cover (2) of the master cylinder is inserted into the oil passage hole (11) from top to bottom in a matching manner. A riveting ring platform (3) is provided on the side wall of the rear cover (2) of the master cylinder, which cooperates with the deformed ring platform (12) to deform the deformed ring platform (12). A ring groove (4) is formed on the side wall of the rear cover (2) of the master cylinder, which connects the riveting ring platform (3) and allows the deformed deformed ring platform (12) to enter.

2. The riveting structure for the rear cover of the master cylinder for wire control applications according to claim 1, characterized in that, The step surface of the riveting ring platform (3) is an upper inclined surface structure, and one end of it connected to the ring groove (4) is inclined upward.

3. The riveting structure for the rear cover of the master cylinder for wire control applications according to claim 1, characterized in that, The bottom of the ring groove (4) is an arc-shaped groove body structure.

4. The riveting structure for the rear cover of the master cylinder for wire control applications according to claim 1, characterized in that, The groove wall of the ring groove (4) away from the riveting ring platform (3) is a downward inclined lower inclined surface structure.

5. The riveting structure for the rear cover of the master cylinder for wire control applications according to any one of claims 1 - 4, characterized in that, A buffer groove (5) connecting the riveting ring platform (3) is provided on the side wall of the rear cover (2) of the master cylinder.

6. The riveting structure for the rear cover of the master cylinder for wire control applications according to claim 5, characterized in that, A guiding surface (6) connecting the buffer groove (5) is provided on the side wall of the rear cover (2) of the master cylinder.

7. The riveting structure for the rear cover of the master cylinder for wire control applications according to any one of claims 1 - 4, characterized in that, A receiving ring platform (13) is further provided on the inner wall of the oil passage hole (11) below the deformed ring platform (12). The receiving ring platform (13) is located below the rear cover (2) of the master cylinder.

8. The riveting structure for the rear cover of the master cylinder for wire control applications according to any one of claims 1 - 4, characterized in that, The lower end of the rear cover (2) of the master cylinder is inserted into the oil passage hole (11) from top to bottom in a matching manner, and the upper end extends out of the oil passage hole (11).

9. The riveting structure for the rear cover of the master cylinder for wire control applications according to any one of claims 1 - 4, characterized in that, The oil passage hole (11) is a circular stepped hole structure, and the rear cover (2) of the master cylinder is a matching stepped shaft structure.

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