Clutch master cylinder with better oil supplementing effect

Abstract

The utility model relates to a clutch master cylinder with a better oil supplementing effect, which is characterized in that a limiting seat at a mounting hole on a cylinder body is provided with an assembly hole for mounting a leather ring, the limiting seat of a plastic part is rotatably welded at a port of a cavity of the cylinder body, a middle hole of the limiting seat is provided with a piston component, and the bottom of the mounting hole is provided with a limiting boss block along the circumferential direction; the limiting boss block is located between the limiting flat washer and the bottom of the mounting hole, and the limiting boss block enables a rapid oil supplementing space used for storing welding slag generated by spin welding to be formed between the limiting flat washer and the bottom of the mounting hole and to be communicated with the oil inlet channel. The space between the limiting flat washer and the bottom of a mounting hole of the pump body can be increased and widened through the limiting boss block, so that the space becomes a rapid oil supplementing space, rapid oil supplementing is achieved, sufficient positions are provided for storing welding slag generated by spin welding, rapid oil supplementing is prevented from being affected by welding slag blocking, and the problems that the air exhausting effect is poor and the oil supplementing effect is poor are well solved. And the gear shifting speed and the stability are improved.

Description

Technical Field

[0001] The utility model relates to a clutch master cylinder. Background Art

[0002] The clutch master cylinder is an important automotive component. The air inside it needs to be exhausted when it is installed on the vehicle at the factory. During the gear shifting process, the oil needs to be replenished (returned) quickly and effectively to ensure that the clutch shifts quickly and smoothly.

[0003] In the clutch master cylinder, a stop seat can be installed at the end of the inner cavity of the pump body for mounting an apron, and a stop flat washer can also be provided to seal the apron against the stop seat. Furthermore, the valve structure of the piston assembly in the clutch master cylinder is located at the inner end of the piston body, and the piston body is provided with an oil passage to cooperate with the valve structure. For example, the clutch master cylinder with a valve assembly in CN221683445U has a tension seat as a stop support seat connected to the front end of the oil passage of the piston body. The gap between the stop support seat and the oil passage is used for oil flow. Clutch master cylinders with this installation structure often suffer from poor air exhaust and oil replenishment during vehicle installation, and lack of fast and smooth shifting. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the utility model aims to provide a clutch master cylinder with better oil replenishment effect.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a clutch master cylinder with better oil filling effect, including a pump body, a pump body is provided with an oil inlet channel, the pump body has a cavity, the cavity port is a mounting hole, a limit seat is provided at the mounting hole, the limit seat axially inner side is provided with an assembly hole for the leather ring, the assembly hole is equipped with a limit flat washer that blocks the leather ring, the limit seat is made of plastic, the limit seat is rotationally welded at the end of the cavity of the pump body, the middle hole of the limit seat is equipped with a piston assembly, the leather ring is sleeved on the outer ring of the piston assembly, and is characterized in that: the bottom of the mounting hole is evenly provided with limiting boss blocks along the circumferential direction, and at least three limiting boss blocks are provided; the limiting boss blocks are limited and arranged on the inner side of the limiting flat washer, the limiting boss blocks are located between the limiting flat washer and the bottom of the mounting hole, and the limiting boss blocks form a quick oil filling space between the limiting flat washer and the bottom of the mounting hole for storing welding slag generated by rotary welding, and the quick oil filling space is connected to the oil inlet channel.

[0006] The following various optimizations or supplementary explanations can be made on the above technical solutions respectively.

[0007] Among them, three, four, five or six limiting boss blocks are evenly arranged along the circumferential direction.

[0008] In addition, an oil passage is provided on the piston body, and a valve structure is configured on the head of the piston body. The valve structure includes a limit support seat, which is connected to the front end of the oil passage; the limit support seat has a protrusion, which is sleeved on the front port of the oil passage, and there is an oil passage gap between the protrusion and the oil passage, and there is also an auxiliary oil passage groove on the inner wall of the front port of the oil passage.

[0009] For example, at least three auxiliary oil-passing grooves are evenly arranged along the circumferential direction.

[0010] The auxiliary oil-passing groove is arranged axially.

[0011] The beneficial effect of the utility model is that the clutch master cylinder with better oil replenishment effect has a limiting boss block which can raise and widen the space at the bottom of the limiting flat washer and the mounting hole of the pump body, making it a quick oil replenishment space, which can achieve quick oil replenishment, and after the space becomes wider and larger, the quick oil replenishment space has sufficient space for storing welding slag generated by the rotary welding (plastic limiting seat), avoiding welding slag blockage affecting quick oil replenishment, and can better solve the problems of poor air exhaust effect and poor oil replenishment effect, thereby improving shifting speed and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following describes the relevant details and working principles of the implementation methods and embodiments of the present invention in conjunction with the accompanying drawings.

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the pump body.

[0015] Figure 3 for Figure 2 Cross-sectional view of AA in the figure.

[0016] Figure 4 for Figure 1 Schematic diagram of the structure of the middle limit flat washer.

[0017] Figure 5 for Figure 4 Front view of .

[0018] Figure 6 for Figure 1 Schematic diagram of the structure of the piston body.

[0019] Figure 7 for Figure 6 Left view of .

[0020] In the picture:

[0021] 1. Pump body; 10. Oil inlet channel; 11. Cavity; 12. Mounting hole;

[0022] 2. Limit seat; 20. Assembly hole; 21. Leather ring;

[0023] 3. Limiting flat washer; 31. Oil groove;

[0024] 4. Piston assembly; 40. Piston body; 41. Oil passage; 411. Auxiliary oil passage groove;

[0025] 5. Limiting boss block;

[0026] 6. Rapid oil replenishment space;

[0027] 7. Valve structure; 70. Limit support seat; 71. Raised portion; 72. Oil clearance. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the implementation of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Referring to the accompanying drawings, the clutch master cylinder of the embodiment of the present embodiment with better oil replenishment effect includes a pump body 1, the pump body 1 is provided with an oil inlet channel 10, a port of a cavity 11 ( Figure 1 The right side of the pump body 1 is the mounting hole 12, and a limit seat 2 is provided at the mounting hole 12. An assembly hole 20 (which can be set as a stepped recessed hole) is provided on the axial inner side of the limit seat 2 (that is, the side facing the cavity 11). The assembly hole 20 is provided for the leather ring 21 to be installed, and the assembly hole 20 is provided with a limiting flat washer 3 for blocking the leather ring 21. The limiting flat washer 3 cooperates to seal the leather ring 21 in the assembly hole 20. The limit seat 2 is made of plastic. The limit seat 2 is rotationally welded and arranged at the port of the cavity 11 of the pump body 1 (that is, in the mounting hole 12), so that the limit seat 2 is fixedly connected to the port position of the cavity 11 of the pump body 1. The middle hole of the limit seat 2 is provided with a piston assembly 4 (such as a piston sleeve, a piston body 40, a push rod, etc.) so that the piston assembly 4 can run axially. The leather ring 21 is sleeved on the outer ring of the piston assembly 4 (such as its piston sleeve) to ensure that the piston assembly 4 is sealed by the leather ring 21 during operation to avoid leakage.

[0030] In addition, the bottom of the mounting hole 12 is evenly provided with limiting bosses 5 along the circumferential direction, and at least three limiting bosses 5 are provided. The limiting bosses 5 are limitedly provided on the inner side of the limiting flat washer 3 ( Figure 1The limiting boss block 5 is located on the left side of the limiting flat washer 3 and the bottom of the mounting hole 12. The multiple limiting boss blocks 5 can smoothly and stably support and limit the limiting flat washer 3 on the inside, and the limiting boss block 5 forms a quick oil replenishment space 6 between the limiting flat washer 3 and the bottom of the mounting hole 12 for storing welding slag generated by rotary welding. The quick oil replenishment space 6 is connected to the oil inlet channel 10. The limiting boss block 5 can not only be used to raise and widen the space between the limiting flat washer 3 and the bottom of the mounting hole 12 to form a quick oil replenishment space 6, which can achieve quick oil replenishment. Moreover, after the space is widened and enlarged, there is sufficient space for storing welding slag generated by rotary welding (plastic limiting seat 2), so as to avoid clogging of welding slag affecting quick oil replenishment.

[0031] The clutch master pump with better oil replenishment effect has a limiting boss block 5 which can raise and widen the space between the limiting flat washer 3 and the bottom of the mounting hole 12 of the pump body 1, so that it becomes a quick oil replenishment space 6, which can achieve quick oil replenishment. Moreover, after the space is widened and enlarged, the quick oil replenishment space 6 has sufficient space for storing welding slag generated by the rotary welding of the (plastic limiting seat 2), so as to avoid clogging of the welding slag and affecting the quick oil replenishment, and can better solve the problems of poor air exhaust effect and poor oil replenishment effect, thereby improving the shifting speed and stability.

[0032] The following optimization or further explanation may be performed based on the above embodiments.

[0033] For example, three, four, five, or six limiting bosses 5 are evenly arranged along the circumferential direction, so that the limiting bosses 5 can be well distributed at the bottom of the mounting hole 12 .

[0034] Oil grooves 31 can be provided on the side of the position-limiting flat washer 3. These grooves 31 are arranged in a divergent manner, that is, radially arranged, to enhance oil degassing capabilities. The position-limiting flat washer 3 can be provided with oil grooves 31 on both sides, allowing for convenient installation regardless of front or back. In the figure, four oil grooves 31 are evenly spaced on each side.

[0035] In addition, an oil passage 41 is provided on the piston body 40, and a valve structure 7 is configured on the head of the piston body 40. The valve structure 7 includes a limiting support seat 70, and the limiting support seat 70 is connected to the front end of the oil passage 41; the limiting support seat 70 has a protrusion 71, and the limiting support seat 70 can adopt a stretching seat made of metal material to facilitate the formation of the protrusion 71. The protrusion 71 is sleeved on the front port of the oil passage 41, and an oil passage gap 72 is provided between the protrusion 71 and the oil passage 41. There is also an auxiliary oil passage groove 411 on the inner wall of the front port of the oil passage 41. The auxiliary oil passage groove 411 is added to make up for the problem of poor oil return and oil replenishment effect of the oil passage gap 72, so that the product has better oil replenishment effect when loading and exhausting air and shifting gears during driving, and the clutch shifting is faster and smoother.

[0036] Among them, the auxiliary oil-passing grooves 411 are evenly arranged in at least three directions along the circumferential direction, and the structure is relatively stable, and it is not easy to cause shaking to the limit support seat 70 and the valve structure 7 during the oil-passing process. Among them, the auxiliary oil-passing grooves 411 are arranged axially.

Claims

1. A clutch master pump with a better oil replenishing effect comprises a pump body (1), an oil inlet passage (10) is provided on the pump body (1), a cavity (11) is provided in the pump body (1), the end of the cavity (11) is a mounting hole (12), a limit seat (2) is provided at the mounting hole (12), an axial inner side of the limit seat (2) is provided with an assembly hole (20) for mounting a leather ring (21), the assembly hole (20) is provided with a limit flat washer (3) for blocking the leather ring (21), the limit seat (2) is made of plastic, the limit seat (2) is rotationally welded and arranged at the end of the cavity (11) of the pump body (1), the middle hole of the limit seat (2) is provided with a piston assembly (4), the leather ring (21) is sleeved on the outer ring of the piston assembly (4), and the characteristics are: The bottom of the mounting hole (12) is evenly provided with limiting boss blocks (5) along the circumferential direction, and at least three limiting boss blocks (5) are provided; The limiting boss block (5) is set on the inner side of the limiting flat washer (3). The limiting boss block (5) is located between the limiting flat washer (3) and the bottom of the mounting hole (12), and the limiting boss block (5) forms a quick oil replenishment space (6) between the limiting flat washer (3) and the bottom of the mounting hole (12) for storing welding slag generated by rotary welding, and the quick oil replenishment space (6) is connected to the oil inlet channel (10).

2. The clutch master cylinder with better oil replenishment effect according to claim 1, characterized in that: The limiting boss blocks (5) are evenly arranged in three, four, five or six positions along the circumferential direction.

3. The clutch master cylinder with better oil replenishment effect as claimed in claim 1, characterized in that: An oil passage (41) is provided on the piston body (40), and a valve structure (7) is configured at the head of the piston body (40). The valve structure (7) includes a position-limiting support seat (70), and the position-limiting support seat (70) is connected to the front end of the oil passage (41); The position limiting support seat (70) has a protrusion (71), which is sleeved on the front end of the oil passage (41), and an oil passage gap (72) is provided between the protrusion (71) and the oil passage (41). An auxiliary oil passage groove (411) is also provided on the inner wall of the front end of the oil passage (41).

4. The clutch master cylinder with better oil replenishment effect as claimed in claim 3, characterized in that: At least three auxiliary oil-passing grooves (411) are evenly arranged along the circumferential direction.

5. The clutch master cylinder with better oil replenishment effect as claimed in claim 3, characterized in that: The auxiliary oil-passing groove (411) is arranged axially.

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