Hydraulic tappet easy and convenient to disassemble and assemble
By using threaded collars and rubber gaskets in the hydraulic lift, the problem of insufficient fixing force of the plunger spring is solved, and a hydraulic lifter that quickly disassembles and improves the sealing effect is achieved.
Patent Information
- Application Number
- CN202421841569.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The plunger spring fixation of existing hydraulic lifts leads to a low clamping force, resulting in the support spring being unable to set a large rebound force and slow adjustment speed.
The threaded ring limit plunger is adopted, and the threaded self-locking installation supports the spring, combined with the rubber washer and the clamping hole design, simplifying the disassembly and assembly process and increasing the sealing effect.
It realizes rapid reset and easy disassembly of the plunger, reduces maintenance intervals and improves sealing performance.
Smart Images
Figure CN223177609U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automotive parts, and relates to a hydraulic tappet, in particular to a hydraulic tappet that is easy to disassemble and assemble. Background Technique
[0002] The hydraulic tappet, also known as the hydraulic valve tappet, is a key component in an automotive engine. The hydraulic tappet has the function of automatically adjusting the clearance. When the valve is closed, the oil pressure keeps the plunger in the upper position; when the valve is opened, due to the downward force of the valve stem on the tappet, part of the oil will flow back to the oil pan through the check valve, causing the plunger to drop slightly to adapt to the movement of the valve stem. This automatic adjustment mechanism ensures that the valve clearance is always maintained in the optimal state.
[0003] The plunger is the main component of the hydraulic tappet. The plunger is usually fixed in the tappet body by a circlip. However, the fixing of the circlip results in a relatively low clamping force of the plunger, which causes the support spring at the bottom of the plunger to not be able to have a large resilience, so the adjustment speed is slow. Summary of the Invention
[0004] The purpose of the utility model is to provide a hydraulic tappet that is easy to disassemble and assemble and has a fast response in view of the above problems existing in the prior art.
[0005] The purpose of the utility model can be achieved by the following technical solutions: A hydraulic tappet that is easy to disassemble and assemble, characterized in that it includes a tappet housing. An installation cavity is provided in the tappet housing. A plunger is provided in the installation cavity. A support spring is provided at the bottom of the plunger. Oil inlet holes are provided on both the tappet housing and the plunger, and the oil inlet holes are interconnected. A threaded collar is provided at the top of the plunger. The threaded collar is fixed in the installation cavity. Symmetrically arranged clamping holes are provided on the threaded collar. A rubber gasket is provided between the threaded collar and the tappet housing.
[0006] In the above-mentioned hydraulic tappet that is easy to disassemble and assemble, a check valve is provided at the bottom of the plunger.
[0007] In the above-mentioned hydraulic tappet that is easy to disassemble and assemble, a ball seat is provided at the top of the plunger. An oil storage cavity is provided on the ball seat, and a telescopic slit is provided on the ball seat.
[0008] Compared with the prior art, the hydraulic tappet that is easy to disassemble and assemble limits the plunger through the threaded collar. Due to the self-locking property of the thread, a support spring with a greater supporting force can be installed in the installation cavity, so that the plunger can be reset faster. The clamping holes on the threaded collar can be clamped by a pair of needle-nose pliers, reducing the operation process during disassembly. The resilience of the rubber gasket after being squeezed reduces the loosening of the threaded collar, reduces the maintenance interval, and further increases the sealing effect. Brief Description of the Drawings
[0009] Figure 1 It is a schematic structural view of a semi-section of a simple disassembly and assembly hydraulic tappet of the present invention.
[0010] In the figure, 1 is a clamping hole; 2 is a threaded collar; 3 is a rubber washer; 4 is an oil inlet hole; 5 is a support spring; 6 is an expansion joint; 7 is an oil storage cavity; 8 is a ball seat; 9 is a plunger; 10 is a tappet housing; 11 is a check valve; 12 is an installation cavity. Specific embodiments
[0011] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.
[0012] As Figure 1 shown, the simple disassembly and assembly hydraulic tappet of the present invention includes a tappet housing 10. An installation cavity 12 is provided inside the tappet housing 10. A plunger 9 is provided inside the installation cavity 12. A support spring 5 is provided at the bottom of the plunger 9. Oil inlet holes 4 are provided on both the tappet housing 10 and the plunger 9, and these oil inlet holes 4 are interconnected. A threaded collar 2 is provided at the top of the plunger 9. The threaded collar 2 is fixed inside the installation cavity 12. Symmetrically arranged clamping holes 1 are provided on the threaded collar 2. A rubber washer 3 is provided between the threaded collar 2 and the tappet housing 10. During installation, the support spring 5 and the plunger 9 are sequentially placed into the installation cavity 12. The plunger 9 is restricted inside the installation cavity 12 by rotating and fixing with the threaded collar 2. The clamping holes 1 can be disassembled and assembled mirror-image with a pair of pointed-nose pliers.
[0013] Preferably, a check valve 11 is provided at the bottom of the plunger 9.
[0014] Preferably, a ball seat 8 is provided at the top of the plunger 9. An oil storage cavity 7 is provided on the ball seat 8. An expansion joint 6 is provided on the ball seat 8. When the ball seat 8 is squeezed, the expansion joint 6 expands to discharge the lubricating grease in the oil storage cavity 7 for lubrication.
[0015] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
[0016] Although terms such as clamping hole 1, threaded collar 2, rubber washer 3, oil inlet hole 4, support spring 5, expansion joint 6, oil storage cavity 7, ball seat 8, plunger 9, tappet housing 10, check valve 11, installation cavity 12, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.
Claims
1. A kind of disassembled and easily assembled hydraulic tappet, characterized in that, It includes a tappet housing (10). An installation cavity (12) is provided inside the tappet housing (10). A plunger (9) is provided inside the installation cavity (12). A support spring (5) is provided at the bottom of the plunger (9). Oil inlet holes (4) are provided on both the tappet housing (10) and the plunger (9), and the oil inlet holes (4) are communicated with each other. A threaded collar (2) is provided at the top of the plunger (9). The threaded collar (2) is fixed inside the installation cavity (12). Clamping holes (1) are symmetrically provided on the threaded collar (2). A rubber washer (3) is provided between the threaded collar (2) and the tappet housing (10).
2. The disassembling and assembling hydraulic tappet according to claim 1, characterized in that, A check valve (11) is provided at the bottom of the plunger (9).
3. The simple disassembly and assembly hydraulic tappet according to claim 1, characterized in that, A ball seat (8) is provided at the top of the plunger (9). An oil storage cavity (7) is provided on the ball seat (8), and a telescopic joint (6) is provided on the ball seat (8).