Oil pool oil injection structure and linear pull oil pressure conversion pump

Abstract

The utility model relates to an oil pool oil injection structure and a linear pull oil pressure conversion pump, the oil pool oil injection structure comprises a pump body, the pump body is provided with a driving cavity and an oil pool cavity, the oil pool cavity is communicated with the driving cavity through a balance hole, the oil pool cavity is provided with an oil injection mechanism, the oil injection mechanism comprises an oil injection hole, an oil seal conical surface is arranged in an inner cavity of the oil injection hole; an external thread section is arranged in the middle of the oil seal bolt, a conical bolt tail which is in rigid contact with the oil seal conical surface to seal the oil injection hole is formed at the bolt tail of the oil seal bolt, and the external thread section is in threaded assembly with the internal thread surface of the oil injection hole; the oil supplementing channel is formed in the middle of the oil seal bolt in the length direction, the first end of the oil supplementing channel penetrates to the bolt head of the oil seal bolt piece, and the second end of the oil supplementing channel penetrates to the annular side wall of the side, close to the conical bolt tail, of the oil seal bolt piece; the sealing ring is arranged on the oil sealing bolt in a sleeving mode and is in interference fit with the inner wall face of the oil injection hole. According to the utility model, a user can operate fluid infusion by himself / herself, and rapid non-dismantling fluid infusion of the linear pulling oil pressure conversion pump is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle accessories, in particular to an oil pool oil filling structure and a wire-pull oil pressure conversion pump. Background Art

[0002] Cable-pull hydraulic disc brake is a new type of disc brake on the market that combines cable-pull disc brake and hydraulic disc brake. It has the advantages of cable-pull disc brake and hydraulic disc brake, with lower cost and better braking experience.

[0003] The key component of the cable-pull oil disc is the cable-pull oil pressure conversion pump, which is used to convert the cable force of the cable brake handle into oil pressure and transport it to the oil pressure pump. The existing cable-pull oil pressure conversion pump also has the disadvantages of traditional oil pressure disc brakes, that is, the pump body needs to be replenished with brake oil after a period of use. However, due to the aesthetic design of the cable-pull oil pressure conversion pump, it is generally installed at the front end of the vehicle body or hidden in the inner end of the integrated handlebar. When replenishing the brake oil, the operating space is small, and the pump body needs to be disassembled and then replenished with oil through special equipment, and the user cannot operate independently.

[0004] Therefore, we proposed an oil pool oil filling structure and a line-pull oil pressure conversion pump. Utility Model Content

[0005] The present application provides an oil pool filling structure and a line-pull oil pressure conversion pump to at least solve the problem in the prior art that when replenishing brake fluid with a line-pull oil pressure conversion pump, the operating space is small, the pump body needs to be disassembled and then the oil is replenished through special equipment, and the user cannot operate independently.

[0006] In a first aspect, the present application provides an oil pool filling structure, including a pump body, wherein a drive chamber and an oil pool chamber are provided on the pump body, wherein the oil pool chamber is connected to the drive chamber through a balancing hole, and an oil filling mechanism is provided on the oil pool chamber, wherein the oil filling mechanism at least includes:

[0007] An oil filling hole, which is connected to the oil pool cavity and has an oil sealing cone surface in its inner cavity;

[0008] An oil seal plug, wherein the middle portion thereof has an external thread section, and the plug tail thereof is formed with a conical plug tail which is in rigid contact with the oil seal conical surface to seal the oil filling hole, and the external thread section is threadedly assembled with the internal thread surface of the oil filling hole;

[0009] An oil replenishing passage is opened in the middle of the length of the oil seal plug, and its first end is connected to the plug head of the oil seal plug, and its second end is connected to the annular side wall of the oil seal plug near the conical plug tail;

[0010] The sealing ring is sleeved on the oil sealing bolt and interference fits with the inner wall surface of the oil filling hole.

[0011] Optionally, an annular limiting groove for positioning and assembling the sealing ring is provided on one side of the oil seal plug close to its plug head.

[0012] Optionally, an oil pipe joint connected to the first end of the oil replenishment channel is also fixed on the oil sealing bolt, and the oil pipe joint is connected to a syringe through an oil replenishment hose to manually replenish the oil.

[0013] Optionally, the bolt head of the oil seal bolt is a hexagonal bolt head.

[0014] Optionally, the pump body is concealed and assembled in a receiving cavity opened at the lower end of the integrated brake handle, and an operating space is provided between the oil sealing plug and the receiving cavity to connect an oil replenishing hose.

[0015] Optionally, the pump body is concealed and assembled in a receiving cavity opened at the lower end of the integrated brake handle, and the oil seal plug is arranged at the bottom end of the pump body to connect with the oil replenishing hose.

[0016] In a second aspect, the present application provides a line-pull oil pressure conversion pump, which includes the oil pool oil filling structure of the first aspect, and also includes:

[0017] A wire driving member, which is movably mounted in the driving cavity and has a wire running through its middle for pulling the member to move;

[0018] An oil outlet hole, which is opened on the pump body and connected to the driving chamber;

[0019] The first end of the oil pipe is assembled on the output end of the oil outlet through an oil pipe joint, and the second end is connected to the oil pressure pump assembled at the front / rear wheel of the bicycle frame.

[0020] Optionally, the wire drive component includes:

[0021] A piston pull rod, which is movably assembled in the driving cavity and has a hollow hole axially opened in the middle thereof for passing the pull wire;

[0022] A sealing ring, which is sleeved on the piston pull rod and limitedly assembled on the step portion formed on the inner wall of the driving chamber;

[0023] A piston ring, which is fixedly sleeved on a stage formed in the radial middle of the piston rod, and whose outer wall surface abuts against the inner wall of the driving cavity, and an oil cavity is formed between the piston ring and the sealing ring;

[0024] A first end piece, which is threadedly assembled on the first open end of the driving cavity and presses and fixes the axial position of the sealing ring, and a first movable cavity is opened in the middle thereof;

[0025] An elastic member, one end of which is limitedly assembled in the hollow hole, and the other end of which extends into the first movable cavity to provide an elastic restoring force after the piston rod moves;

[0026] A second end piece, a first end of which is threadedly assembled on the second open end of the driving cavity and abuts against the side wall of the stage of the piston rod to limit the starting point of the stroke of the piston rod, and a second movable cavity is opened in the middle thereof;

[0027] The wire clip terminal is movably assembled in the second movable cavity, and its first end is threadedly inserted to cooperate with the end of the piston pull rod, and the wire clip terminal is provided with a wire locking screw to fix the pull wire.

[0028] Optionally, the oil chamber is communicated with an input end of the oil outlet hole.

[0029] Compared with the related art, the oil pool filling structure and the line-pull oil pressure conversion pump provided by the present application have at least the following technical effects:

[0030] The oil seal plug is threadedly assembled in the oil filling hole, the tapered plug tail is in rigid contact with the tapered surface of the oil seal, the sealing ring is interference fit with the inner wall of the oil filling hole, and double sealing is achieved; when the pump body needs to be replenished, the oil seal plug is loosened by twisting it in the opposite direction of the thread, so that an annular liquid inlet channel is generated between the tapered plug tail and the tapered surface of the oil seal, and the sealing ring is still in an interference fit with the inner wall of the oil filling hole, avoiding oil leakage during replenishment. The user can operate it by themselves to achieve fast and disassembly-free replenishment of the line-pull oil pressure conversion pump.

[0031] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 The figure is a schematic diagram of the assembly of a wire-pull oil pressure conversion pump according to an exemplary embodiment.

[0034] Figure 2 The structure of the wire-pull oil pressure conversion pump is shown in three dimensions according to an exemplary embodiment. Figure 1 .

[0035] Figure 3 The structure of the wire-pull oil pressure conversion pump is shown in three dimensions according to an exemplary embodiment. Figure 2 .

[0036] Figure 4 is a top view of a pump body structure according to an exemplary embodiment.

[0037] Figure 5 The figure is a side view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment.

[0038] Figure 6 is based on Figure 5 AA structure cross-sectional view.

[0039] Figure 7 The figure is a schematic diagram of an oil seal plug structure according to an exemplary embodiment.

[0040] Figure 8 is based on Figure 5 BB structure cross-sectional view.

[0041] Fig. 9 It is a three-dimensional diagram of the structure of a wire-pull oil pressure conversion pump according to another exemplary embodiment.

[0042] Description of reference numerals:

[0043] Integrated brake handle 10;

[0044] Pump body 20: driving chamber 201, step portion 202, oil outlet hole 203, plug screw 204;

[0045] Oil pool cavity 30: balancing hole 301;

[0046] The oil filling mechanism 40 includes an oil filling hole 401, an oil seal conical surface 402, an oil seal plug 403, a conical plug tail 404, a hexagonal plug head 405, an oil replenishing channel 406, an oil pipe joint 407, an annular limit groove 408, and a sealing ring 409;

[0047] Oil pipe joint 50;

[0048] The wire driving member 60 includes a piston rod 601, a piston ring 602, an elastic member 603, a sealing ring 604, a first end member 605, a second end member 606, and a wire buckle terminal 607;

[0049] Syringe 70. DETAILED DESCRIPTION

[0050] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the related art, the cable-pull hydraulic conversion pump also has the disadvantages of the traditional hydraulic disc brake, that is, the brake fluid needs to be added to the pump body after a period of use. However, due to its aesthetic design, the cable-pull hydraulic conversion pump is generally installed at the front end of the vehicle body or hidden at the inner end of the handlebar. When adding brake fluid, the operating space is small, and the pump body needs to be disassembled and then the fluid is added through special equipment. The user cannot operate independently.

[0054] Based on the above situation, an embodiment of the utility model provides an oil pool oil filling structure and a line-pull oil pressure conversion pump, which are described in detail below in conjunction with specific embodiments and drawings.

[0055] Example 1

[0056] The embodiment of the utility model provides an oil pool oil filling structure. Figure 2 The structure of the wire-pull oil pressure conversion pump is shown in three dimensions according to an exemplary embodiment. Figure 1 . Figure 3 The structure of the wire-pull oil pressure conversion pump is shown in three dimensions according to an exemplary embodiment. Figure 2 . Figure 4 is a top view of a pump body structure according to an exemplary embodiment. Figure 5 The figure is a side view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment. Figure 6 is based on Figure 5 AA structure cross-sectional view. Figure 7 FIG. 1 is a schematic diagram of an oil seal plug structure according to an exemplary embodiment. Figure 1-7As shown, the oil pool oil filling structure includes: a pump body 20, a driving chamber 201 and an oil pool chamber 30 are opened on the pump body 20, the oil pool chamber 30 is connected with the driving chamber 201 through a balance hole 301, and an oil filling mechanism 40 is provided on the oil pool chamber 30, which is used to seal the oil pool chamber 30 in a normal state. When the pump body 20 needs to be supplemented with oil, the oil can be conveniently injected through a syringe 70 and a hose;

[0057] In this embodiment, Figure 1-7 As shown, the oil injection mechanism 40 at least includes:

[0058] The oil filling hole 401 is connected to the oil pool cavity 30, and an oil sealing cone surface 402 is provided in the inner cavity thereof;

[0059] The oil seal plug 404 has an external thread section in the middle, and the plug tail is formed with a conical plug tail 404 which is in rigid contact with the oil seal conical surface 402 to seal the oil filling hole 401, and the external thread section is threadedly assembled with the internal thread surface of the oil filling hole 401; the plug head of the oil seal plug 403 is a hexagonal plug head 405;

[0060] The oil replenishing passage 406 is opened in the middle of the length of the oil seal plug 404, and its first end penetrates the plug head of the oil seal plug 404, and its second end penetrates the annular side wall of the oil seal plug 404 near the conical plug tail 404; the oil seal plug 403 is also fixed with an oil pipe joint 407 connected to the first end of the oil replenishing passage 406, and the oil pipe joint 407 is connected to the injector 70 through an oil replenishing hose for manual replenishment of oil;

[0061] The sealing ring 409 is sleeved on the oil sealing plug 404 and interference fits with the inner wall surface of the oil filling hole 401, and an annular limiting groove 408 for positioning and assembling the sealing ring 409 is provided on one side of the oil sealing plug 403 close to its plug head.

[0062] In this embodiment, in the initial state, the oil seal plug 404 is threadedly assembled in the oil filling hole 401, the conical plug tail 404 is in rigid contact with the oil seal conical surface 402, and the sealing ring 409 sleeved on the oil seal plug 404 is in interference fit with the inner wall surface of the oil filling hole 401 at this time, and double sealing is achieved to ensure the sealing of the oil filling hole 401 and prevent oil leakage;

[0063] When the pump body 20 needs to be replenished with oil, a tool is used to twist the hexagonal bolt head 405 of the oil seal bolt 404, and slightly loosen it along the thread direction by a certain stroke, so that an annular liquid inlet channel is generated between the tapered bolt tail 404 and the oil seal tapered surface 402. At the same time, it can be understood that at this time, the sealing ring 409 sleeved on the oil seal bolt 404 and the inner wall surface of the oil filling hole 401 are still in an interference fit state, thereby avoiding oil leakage during the replenishment state.

[0064] In this embodiment, Figure 1FIG. 1 is a schematic diagram of a wire-pull oil pressure conversion pump assembly according to an exemplary embodiment. Figure 1 The pump body 20 is hidden and assembled in the accommodating cavity opened at the lower end of the integrated brake handle 10, and there is an operating space between the oil seal plug 403 and the accommodating cavity to connect the oil replenishing hose;

[0065] In the technical solution of the above embodiment, there is no need to disassemble the pump body 20. The oil replenishing hose can be directly connected to the oil pipe joint 407, the oil seal plug 404 can be loosened by twisting, and the syringe 70 can be pressed. The oil in the syringe can reach the oil pool cavity 30 through the oil replenishing channel 406-oil filling hole 401, thereby realizing rapid brake oil replenishment and ensuring the braking performance of the bicycle.

[0066] In summary, the oil pool filling structure provided by the embodiment of the utility model is threadedly assembled in the oil filling hole 401 through the oil seal plug 404, the conical plug tail 404 is in rigid contact with the oil seal cone surface 402, and the sealing ring 409 is interference fit with the inner wall surface of the oil filling hole 401, which realizes double sealing; when the pump body 20 needs to be replenished, the oil seal plug 404 is loosened by twisting it in the reverse direction along the thread, so that an annular liquid inlet channel is generated between the conical plug tail 404 and the oil seal cone surface 402 at this time, and the sealing ring 409 is still in an interference fit state with the inner wall surface of the oil filling hole 401, so as to avoid oil leakage during the replenishment state, and the user can operate it by himself to realize fast and disassembly-free replenishment of the line-pull oil pressure conversion pump.

[0067] Example 2

[0068] The difference between this embodiment and embodiment 1 is that embodiment 2 of the utility model provides another oil seal bolt assembly position. Fig. 9 FIG. 1 is a perspective view of a wire-pull oil pressure conversion pump structure according to another exemplary embodiment. Fig. 9 The pump body 20 is hidden and assembled in the accommodating cavity opened at the lower end of the integrated brake handle 10, and the oil seal plug 403 is arranged at the bottom end of the pump body 20 to directly connect the oil replenishing hose, without leaving operating space in the accommodating cavity, to achieve the same convenient oil replenishing effect.

[0069] For other structures not described, refer to Example 1.

[0070] Example 3

[0071] The difference between this embodiment and embodiment 1 is that embodiment 3 of the utility model provides a wire-pull oil pressure conversion pump. Figure 5 FIG. 1 is a side view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment. Figure 5 As shown, the line-pull oil pressure conversion pump includes the oil pool oil filling structure of the above-mentioned embodiments 1-2, and also includes:

[0072] The wire driving member 60 is movably mounted in the driving cavity 201, and a wire for pulling the member is passed through the middle thereof;

[0073] An oil outlet hole 203 is provided on the pump body 20 and communicated with the driving chamber 201;

[0074] The oil pipe has a first end assembled on the output end of the oil outlet hole 203 through an oil pipe joint 50, and a second end connected to an oil pressure pump assembled at the front / rear wheel of the bicycle frame.

[0075] Specifically, Figure 5 The figure is a side view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment. Figure 8 is based on Figure 5 BB structure cross-sectional view. Figure 8 , the wire driving member 60 includes:

[0076] The piston pull rod 601 is movably assembled in the driving chamber 201, and a hollow hole for passing a pull wire is axially opened in the middle thereof;

[0077] A sealing ring 604, which is sleeved on the piston rod 601 and limitedly assembled on the step portion 202 formed on the inner wall of the driving chamber 201;

[0078] The piston ring 602 is fixedly sleeved on the stage formed in the radial middle of the piston rod 601, and its outer wall surface abuts against the inner wall of the driving chamber 201. An oil cavity is formed between the piston ring 602 and the sealing ring 604, and the oil cavity is connected to the input end of the oil outlet hole 203;

[0079] A first end piece 605 is threadedly assembled on the first open end of the driving cavity 201 and presses and fixes the axial position of the sealing ring 604, and a first movable cavity is opened in the middle thereof;

[0080] The elastic member 603 has one end limitedly assembled in the hollow hole and the other end extending into the first movable cavity to provide elastic restoring force after the piston rod 601 moves;

[0081] The second end piece 606, the first end of which is threadedly assembled on the second open end of the driving cavity 201 and abuts against the side wall of the piston rod 601 to limit the starting point of the stroke of the piston rod 601, and the second movable cavity is opened in the middle thereof;

[0082] The wire clip terminal 607 is movably assembled in the second movable cavity, and its first end is threadedly inserted to match the end of the piston pull rod 601, and a wire locking screw is provided on the wire clip terminal 607 to fix the pull wire.

[0083] In the technical solution of the above embodiment, when installed on a bicycle, it is used in conjunction with one of the brake handles and the oil pressure pump on the integrated brake handle 10. Specifically, the first end of the pull wire is connected to the brake handle, and the second end passes through the hollow hole and is fixed to the wire buckle terminal 607 through the locking screw; the first end of the oil pipe is connected to the oil outlet 203 through the oil pipe joint 50, and the second end is connected to the oil pressure pump assembled at the front / rear wheel of the bicycle frame;

[0084] When the brake handle is squeezed, the piston rod 601 is pulled by the pull wire and moves axially forward in the driving chamber 201, and drives the oil in the oil chamber to be discharged through the oil outlet 203 through the piston ring 602, and then enters the oil pressure pump at the front / rear wheel through the oil pipe. The oil pressure pump clamps the disc of the front / rear wheel for oil pressure braking, the oil circuit is smooth, and the braking is stable.

[0085] For other structures not described, refer to Example 1.

[0086] To summarize, the oil pool filling structure and the line-pull oil pressure conversion pump provided by the embodiment of the utility model are threadedly assembled in the oil filling hole 401 through the oil seal plug 404, the conical plug tail 404 is in rigid contact with the oil seal cone surface 402, and the sealing ring 409 is interference fit with the inner wall surface of the oil filling hole 401, and double sealing; when the pump body 20 needs to be replenished, the oil seal plug 404 is loosened by twisting it in the opposite direction along the thread, so that an annular liquid inlet channel is generated between the conical plug tail 404 and the oil seal cone surface 402 at this time, and the sealing ring 409 and the inner wall surface of the oil filling hole 401 are still in an interference fit state, so as to avoid oil leakage during the replenishment state, and the user can operate it by himself to realize the rapid and non-disassembly replenishment of the line-pull oil pressure conversion pump.

[0087] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An oil pool filling structure, comprising a pump body, characterized in that: The pump body is provided with a driving chamber and an oil pool chamber, the oil pool chamber is connected with the driving chamber through a balancing hole, and the oil pool chamber is provided with an oil injection mechanism, the oil injection mechanism at least comprises: An oil filling hole, which is connected to the oil pool cavity and has an oil sealing cone surface in its inner cavity; An oil seal plug, wherein the middle portion thereof has an external thread section, and the plug tail thereof is formed with a conical plug tail which is in rigid contact with the oil seal conical surface to seal the oil filling hole, and the external thread section is threadedly assembled with the internal thread surface of the oil filling hole; An oil replenishing passage is opened in the middle of the length of the oil seal plug, and its first end is connected to the plug head of the oil seal plug, and its second end is connected to the annular side wall of the oil seal plug near the conical plug tail; The sealing ring is sleeved on the oil sealing bolt and interference fits with the inner wall surface of the oil filling hole.

2. The oil pool oil filling structure according to claim 1, characterized in that: An annular limiting groove for positioning and assembling the sealing ring is provided on one side of the oil seal plug close to its plug head.

3. The oil pool oil filling structure according to claim 1, characterized in that: An oil pipe joint connected to the first end of the oil replenishment channel is also fixed on the oil seal bolt, and the oil pipe joint is connected to a syringe through an oil replenishment hose to manually replenish oil.

4. The oil pool oil filling structure according to claim 1, characterized in that: The bolt head of the oil seal bolt is a hexagonal bolt head.

5. The oil pool oil filling structure according to claim 3, characterized in that: The pump body is concealed and assembled in a receiving cavity opened at the lower end of the integrated brake handle, and an operating space is provided between the oil sealing plug and the receiving cavity to connect an oil replenishing hose.

6. The oil pool oil filling structure according to claim 3, characterized in that: The pump body is concealed and assembled in a receiving cavity opened at the lower end of the integrated brake handle, and the oil seal plug is arranged at the bottom end of the pump body to connect with the oil replenishing hose.

7. A line-pull oil pressure conversion pump, characterized in that: It comprises the oil pool oil filling structure according to any one of claims 1 to 6, and further comprises: A wire driving member, which is movably mounted in the driving cavity and has a wire running through its middle for pulling the member to move; An oil outlet hole, which is opened on the pump body and connected to the driving chamber; The first end of the oil pipe is assembled on the output end of the oil outlet through an oil pipe joint, and the second end is connected to the oil pressure pump assembled at the front / rear wheel of the bicycle frame.

8. The wire-pull oil pressure conversion pump according to claim 7, characterized in that: The wire driving member comprises: A piston pull rod, which is movably assembled in the driving cavity, and has a hollow hole axially opened in the middle thereof for passing the pull wire; A sealing ring, which is sleeved on the piston pull rod and limitedly assembled on the step portion formed on the inner wall of the driving chamber; A piston ring, which is fixedly sleeved on a stage formed in the radial middle of the piston rod, and whose outer wall surface abuts against the inner wall of the driving cavity, and an oil cavity is formed between the piston ring and the sealing ring; A first end piece, which is threadedly assembled on the first open end of the driving cavity and presses and fixes the axial position of the sealing ring, and a first movable cavity is opened in the middle thereof; An elastic member, one end of which is limitedly assembled in the hollow hole, and the other end of which extends into the first movable cavity to provide an elastic restoring force after the piston rod moves; A second end piece, a first end of which is threadedly assembled on the second open end of the driving cavity and abuts against the side wall of the stage of the piston rod to limit the starting point of the stroke of the piston rod, and a second movable cavity is opened in the middle thereof; The wire clip terminal is movably assembled in the second movable cavity, and its first end is threadedly inserted to cooperate with the end of the piston pull rod, and the wire clip terminal is provided with a wire locking screw to fix the pull wire.

9. The wire-pull oil pressure conversion pump according to claim 8, characterized in that: The oil cavity is communicated with the input end of the oil outlet hole.

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