Multi-rib valve collet

Abstract

The utility model discloses a multi-rib valve collet which is located between a valve and a spring seat, the valve collet is provided with a limiting convex rib protruding towards the valve, the outer wall of the valve is provided with a limiting groove connected with the limiting convex rib in a matched mode, and the valve collet comprises an enclasping structure for limiting the valve. The holding structure comprises an abutting part abutting against the outer wall of the air valve and an avoiding part avoiding the outer wall of the air valve, and the abutting part and the avoiding part are at least arranged at the limiting convex rib. The abutting part is arranged on the limiting convex rib to achieve abutting assembly of the limiting convex rib and the limiting groove, then the air valve is limited, meanwhile, the avoiding part is arranged on the limiting convex rib to enable an avoiding gap to be formed between the valve collet and the air valve, abrasion between the air valve and the valve collet is relieved in cooperation with the abutting part, and the replacement cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of engine parts, specifically relating to a multi-ribbed valve lock clip. Background Technology

[0002] During engine operation, valves may be affected by various factors, such as foreign object adhesion, leading to valve loosening or jamming. Existing technology incorporates valve lock clips, which, by inserting into the valve's groove, ensure the valve remains in the correct position under these adverse conditions, preventing loosening or jamming and thus avoiding engine damage. The valve lock clip forms a structural connection with the groove on the valve stem, providing support for the valve spring. With the valve lock clip's protection, the valve stem is fixed between the valve spring seats, ensuring the valve does not shift or detach during operation due to foreign objects or other reasons. By fixing the valve stem position, preventing valve loosening or jamming, assisting in the correct valve movement, and providing structural connection and support, the valve lock clip ensures efficient and reliable engine operation.

[0003] Currently, valves and valve locks are mostly clearance fits, allowing the valve to move axially. During this movement, wear occurs between the valve and the valve lock, which may lead to engine failure. Both the valve and the valve lock need to be replaced simultaneously, resulting in high maintenance costs. Utility Model Content

[0004] This application provides a multi-ribbed valve lock clamp that, while clamping and limiting the valve, reduces the impact wear between the valve and the valve lock clamp.

[0005] The technical solution adopted in this application is as follows:

[0006] A multi-ribbed valve lock clamp is located between the valve and the spring seat. The valve lock clamp has a limiting rib protruding towards the valve, and the outer wall of the valve has a limiting groove that cooperates with the limiting rib. The valve lock clamp includes a clamping structure for limiting the valve. The clamping structure includes an abutting part that abuts against the outer wall of the valve and a clearance part that avoids the outer wall of the valve. The abutting part and the clearance part are provided at least at the limiting rib.

[0007] In a preferred implementation of a multi-ribbed valve lock clip, the clearance portion and the abutment portion include a first clearance area and a first abutment area formed sequentially along the protruding direction of the limiting rib, and the first abutment area abuts against the side wall and bottom wall of the limiting groove.

[0008] In a preferred implementation of a multi-ribbed valve lock clip, the opening of the limiting groove is provided with an enlarged diameter section, and an avoidance gap is provided between the enlarged diameter section and the limiting rib to form a first avoidance zone.

[0009] In a preferred implementation of the multi-joint valve lock clip, the inner diameter of the limiting convex rib is smaller than the bottom diameter of the limiting groove, so that the first abutting area is formed between the limiting convex rib and the groove bottom and the sidewall of the limiting groove.

[0010] In a preferred implementation of the multi-joint valve lock clip, the limiting convex ribs are arranged along the axial direction of the valve, and the plurality of limiting convex ribs are uniformly spaced.

[0011] In a preferred implementation of the multi-joint valve lock clip, the clamping structure includes a limiting convex platform, the abutting portion further includes a second abutting area arranged on the limiting convex platform, and the outer wall of the valve is provided with a stepped portion abutting with the second abutting area.

[0012] In a preferred implementation of the multi-joint valve lock clip, a limiting convex platform is arranged between the two adjacent limiting convex ribs, and the convex surface of the limiting convex platform forms the second abutting area.

[0013] In a preferred implementation of the multi-joint valve lock clip, the convex height of the limiting convex platform is smaller than the convex height of the limiting convex rib.

[0014] In a preferred implementation of the multi-joint valve lock clip, the avoiding portion includes a second avoiding area arranged between the limiting convex platform and the adjacent limiting convex rib.

[0015] In a preferred implementation of the multi-joint valve lock clip, the two multi-joint valve lock clips are abutted and fitted to form a hollow rotary body, and the inner diameter of the rotary body gradually decreases along the vertical downward direction.

[0016] As the above technical solutions are adopted, the application has the following beneficial effects:

[0017] (1) The application limits the valve by arranging the valve lock clip, and realizes the abutment of the valve lock clip and the valve by arranging the limiting convex rib on the valve lock clip and the limiting groove on the valve, effectively preventing the valve from moving relative to the valve lock clip. The outer taper surface of the lock clip and the taper hole of the spring seat are matched to limit the relative position between the valve and the spring seat. The abutting portion arranged on the limiting convex rib realizes the abutting assembly of the limiting convex rib and the limiting groove, thereby limiting the valve. The avoiding portion arranged on the limiting convex rib forms an avoiding gap between the valve lock clip and the valve, reduces the contact area between the valve lock clip and the valve, reduces the friction loss of the valve and the valve lock clip, and reduces the replacement cost.

[0018] (2) The inner diameter of the limiting rib is smaller than that of the limiting groove, allowing the limiting rib to be tightly inserted into the bottom of the limiting groove. Combined with the expanded diameter section at the opening of the limiting groove, a first clearance area is formed first along the protruding direction of the limiting rib. This first clearance area is formed at the position of the limiting rib relative to the opening of the limiting groove, thus creating a clearance gap between the limiting rib and the opening of the limiting groove. This, along with the first abutment area, prevents excessive wear caused by continuous collisions or friction between the limiting groove and the limiting rib during engine operation due to the gap. Only the valve lock clip needs to be replaced, reducing maintenance costs. This design achieves both valve locking via the valve lock clip and prevents collisions and impacts between the valve and the valve lock clip during engine operation.

[0019] (3) The present application further provides a limiting boss in the valve lock clamp, which further abuts against the outer wall of the valve and further limits the valve. By limiting the valve in the radial direction through the limiting boss, the valve can be prevented from moving in the radial direction, which helps to ensure that the valve lock clamp can reduce the wear between the valve and the valve while achieving a stable limiting effect on the valve.

[0020] (4) In this application, the limiting boss is positioned between two adjacent limiting ribs. Since the limiting ribs have a first clearance area and a first contact area, this method can compensate for the impact of the clearance area on the valve support by the limiting boss, thereby improving the limiting stability of the valve lock clamp on the valve. At the same time, positioning the limiting boss between two limiting ribs is beneficial to improving the structural stability and support strength of the valve lock clamp itself. The raised surface of the limiting boss directly abuts against the stepped part of the valve outer wall. During the assembly process, the installation of the limiting boss can provide a prompt for the valve lock clamp and the valve to be in place, avoiding the limiting rib from being over-inserted into the limiting groove due to the first contact area. This ensures the accurate position of the first contact area and the first clearance area, and achieves accurate docking and assembly between the valve lock clamp and the valve. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the valve lock clip structure in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the cooperation structure between the limiting rib and the valve in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the assembly of the valve lock clip in one embodiment of the present invention.

[0025] Explanation of reference signs:

[0026] 1-valve, 11-limiting groove, 12-step portion; 2-valve lock clamp, 21-limiting protruding rib, 22-first avoiding area, 23-second avoiding area, 24-first abutting area, 25-second abutting area, 26-limiting boss; 3-spring seat. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0028] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment can be combined with each other without conflict.

[0029] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation to the present application.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0032] The present application provides a multi-joint valve lock clamp, as shown in Figures 1 to 3 The valve lock clamp 2 is located between the valve 1 and the spring seat 3, and the valve lock clamp 2 is provided with a limiting convex rib 21 protruding towards the valve 1, and the outer wall of the valve 1 is provided with a limiting groove 11 matched with the limiting convex rib 21. The valve lock clamp 2 includes a clamping structure for limiting the valve 1, and the clamping structure includes an abutting portion abutting against the outer wall of the valve 1 and an avoiding portion avoiding the outer wall of the valve 1. The abutting portion and the avoiding portion are arranged at least at the limiting convex rib 21.

[0033] The present application limits the valve 1 by setting the valve lock clamp 2, and cooperates the limiting convex rib 21 of the valve lock clamp 2 with the limiting groove 11 of the valve 1 to realize the butt joint of the valve lock clamp 2 and the valve 1, effectively preventing the valve 1 from moving relative to the valve lock clamp 2. The valve lock clamp 2 cooperates with the tapered hole of the spring seat 3 through the outer tapered surface of the lock clamp and the tapered hole of the spring seat 3, thereby limiting the relative position between the valve 1 and the spring seat 3 through the valve lock clamp 2.

[0034] Meanwhile, in the present application, the abutting portion is arranged on the limiting convex rib 21 to realize the abutting assembly of the limiting convex rib 21 and the limiting groove 11, thereby limiting the valve 1. Meanwhile, the avoiding portion is arranged on the limiting convex rib 21 to form an avoiding gap between the valve lock clamp 2 and the valve 1, thereby reducing the contact area between the valve lock clamp 2 and the valve 1, reducing the wear of the valve 1 and the valve lock clamp 2, and reducing the replacement cost.

[0035] In addition, the abutting portion and the avoiding portion can be further improved according to actual needs of the valve lock clamp 2, and the abutting portion and / or the avoiding portion can be arranged on other parts of the valve lock clamp 2 to further realize the stable limiting of the valve lock clamp 2 to the valve 1, or to further weaken the friction damage between the valve lock clamp 2 and the valve 1.

[0036] In one embodiment, as shown in Figure 2 , Figure 3As shown, the avoiding portion and the abutting portion include a first avoiding area 22 and a first abutting area 23 formed in sequence along the protruding direction of the limiting protrusion 21, and the first abutting area 24 abuts against the side wall and the bottom wall of the limiting recess 11.

[0037] The limiting protrusion 21 and the limiting recess 11 are tightly abutted by the first abutting area 24, so as to avoid serious collision and wear between the limiting protrusion 21 and the bottom of the limiting recess 11. The first abutting area 24 abuts against the side wall and the bottom wall of the limiting recess 11, which is beneficial to disperse the contact stress between the valve lock 2 and the valve 1. On the other hand, the first abutting area 24 provides abutting support for the first avoiding areas 22 on both sides. In combination with the setting position of the first abutting area 24, the first abutting area 24 abuts against the side wall and the bottom wall of the limiting recess 11, which is beneficial to further weaken the axial movement of the valve 1.

[0038] Preferably, the slot of the limiting recess 11 is provided with a diameter expansion section, and an avoiding gap is arranged between the diameter expansion section and the limiting protrusion 21 to form the first avoiding area 22.

[0039] In the embodiment, the first avoiding area 22 is arranged at the slot of the limiting recess 11, which can effectively avoid the wear of the valve 1. During the movement of the engine, the valve 1 has a tendency to move axially, and the wear between the valve 1 and the valve lock 2 is most serious at the slot of the limiting recess 11. The diameter expansion section is arranged at the slot, so as to form an avoiding gap between the slot wall of the slot and the valve lock 2, which can effectively avoid the continuous friction and collision between the valve 1 and the valve lock 2 due to the axial movement of the valve 1, and further facilitate the protection of the valve 1. During the maintenance and replacement, only the valve lock 2 needs to be replaced, which is beneficial to reduce the replacement cost of the components and prolong the service life of the valve 1.

[0040] In a preferred implementation manner, as shown in Figure 2 The inner diameter of the limiting protrusion 21 is smaller than the bottom diameter of the limiting recess 11, so as to form the first abutting area 24 between the limiting protrusion 21 and the bottom and the side wall of the limiting recess 11.

[0041] In this embodiment, the first abutting area 24 cooperates with the first avoiding area 22 to further weaken the collision and abrasion between the valve 1 and the valve lock clamp 2. The inner diameter of the limiting protrusion 21 is smaller than the limiting groove 11, the limiting protrusion 21 can be tightly inserted into the bottom of the limiting groove 11, cooperates with the enlarged section at the opening of the limiting groove 11, and the first avoiding area 22 is formed first along the protruding direction of the limiting protrusion 21, and then the first abutting area 24 is gradually formed. Therefore, the first avoiding area 22 is formed at the position of the limiting protrusion 21 relative to the opening of the limiting groove 11, so that the avoiding gap is formed between the limiting protrusion 21 and the opening of the limiting groove 11, which avoids the continuous collision or friction between the opening of the limiting groove 11 formed by the valve 1 and the valve lock clamp 2 during the movement of the engine, thereby reducing the maintenance cost. Cooperating with the first abutting area 24, the valve 1 can be locked by the valve lock clamp 2 to prevent the collision and impact between the valve 1 and the valve lock clamp 2 during the movement of the engine.

[0042] Preferably, a plurality of limiting protrusions 21 are arranged along the axial direction of the valve 1, and the plurality of limiting protrusions 21 are uniformly spaced.

[0043] The specific number of limiting protrusions 21 can be set according to the actual application scene, which can be improved by the person skilled in the art according to the actual application demand.

[0044] In one embodiment, as shown in Figure 1 、 Figure 3 , the clamping structure includes a limiting boss 26, the abutting part further includes a second abutting area 25 arranged on the limiting boss 26, and the outer wall of the valve 1 is provided with a stepped portion 12 abutting with the second abutting area 25.

[0045] The scheme of the present application further arranges the limiting boss 26 on the valve lock clamp 2 to strengthen the limiting effect of the clamping structure on the valve 1. The limiting boss 26 realizes further abutting with the outer wall of the valve 1 to further limit the outer wall of the valve 1. At the same time, when the first abutting area 24 is arranged, the first abutting area 24 avoids the gap abrasion between the valve lock clamp 2 and the valve 1, and the abutting and limiting of the limiting boss 26 in the radial direction of the valve 1 can further avoid the movement of the valve 1 in the radial direction, which is beneficial to guarantee the stable limiting effect of the valve 1 while reducing the abrasion between the valve lock clamp 2 and the valve 1.

[0046] Preferably, the limiting boss 26 is arranged between the two adjacent limiting protrusions 21, and the protruding surface of the limiting boss 26 forms the second abutting area 25.

[0047] The limiting boss 26 is arranged between two adjacent limiting convex ribs 21. Since the limiting convex rib 21 is provided with the first avoiding area 22 and the first abutting area 24, this mode can compensate for the support influence of the avoiding part on the valve 1 through the limiting boss 26, improve the limiting stability of the valve retainer 2 on the valve 1, and meanwhile, the limiting boss 26 is arranged between two limiting convex ribs 21, which is beneficial to the improvement of the structural stability and support strength of the valve retainer 2 itself. The protruding surface of the limiting boss 26 directly abuts against the stepped portion 12 of the outer wall of the valve 1. In the assembly process, the assembly of the valve retainer 2 and the valve 1 can be prompted in place through the installation of the limiting boss 26, so as to avoid that the limiting convex rib 21 is excessively inserted into the limiting groove 11 due to the first abutting area 24, thereby ensuring the position accuracy of the first abutting area 24 and the first avoiding area 22 and realizing the accurate butt joint assembly between the valve retainer 2 and the valve 1.

[0048] Further, the protruding height of the limiting boss 26 is less than the protruding height of the limiting convex rib 21. The stability of the valve retainer 2 is avoided to be unbalanced, and meanwhile, the valve 1 is conveniently adaptively arranged, and the processing difficulty and assembly difficulty are low.

[0049] In an embodiment, as shown in Figure 3 , the avoiding part includes a second avoiding area 23 arranged between the limiting boss 26 and the adjacent limiting convex rib 21. By arranging the second avoiding area 23, the contact area between the valve retainer 2 and the valve 1 after arranging the limiting boss 26 is reduced, so as to weaken the friction damage between them and further protect the valve 1.

[0050] Preferably, as shown in Figure 2 , Figure 3 , the first avoiding area 22 and the second avoiding area 23 are communicated.

[0051] In an embodiment, two multi-muscle valve retainers 2 are butt jointed to form a hollow rotary body, and the rotary body gradually decreases in diameter along the vertical downward direction.

[0052] The valve 1 is enclosed by the butt joint of the two valve retainers 2, and the valve 1 is located in the hollow inner cavity of the rotary body. The valve retainer 2 outside the valve 1 limits and protects the internal valve 1, and the change of the inner diameter of the rotary body is equivalent to the change of the inner diameter of each valve retainer 2, so as to improve the clamping and limiting stability of the valve retainer 2 on the valve 1 and avoid the valve 1 from falling off.

[0053] The places not mentioned in the present application can be realized by adopting or referring to the existing technology.

[0054] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment mainly describes the difference from other embodiments.

[0055] The above merely provides an example of the present application, but is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A multi-jawed airlock clamp, characterized in that, The valve lock clamp (2) is located between the valve (1) and the spring seat (3), the valve lock clamp (2) is provided with a limiting convex rib (21) protruding towards the valve (1), the outer wall of the valve (1) is provided with a limiting groove (11) matched with the limiting convex rib (21), the valve lock clamp (2) comprises a clamping structure for limiting the valve (1), the clamping structure comprises an abutting portion abutting against the outer wall of the valve (1) and an avoiding portion avoiding the outer wall of the valve (1), and the abutting portion and the avoiding portion are arranged at least at the limiting convex rib (21).

2. The multi-jawed valve lock clamp of claim 1, wherein, The avoiding portion and the abutting portion comprise a first avoiding area (22) and a first abutting area (24) formed in sequence along the protruding direction of the limiting convex rib (21), and the first abutting area (24) abuts against the side wall and the bottom wall of the limiting groove (11).

3. The multi-jawed valve lock clamp of claim 2, wherein, The slot of the limiting groove (11) is provided with an expanding section, and an avoiding gap is arranged between the expanding section and the limiting convex rib (21) to form the first avoiding area (22).

4. The multi-jawed valve lock clamp of claim 2, wherein, The inner diameter of the limiting convex rib (21) is smaller than the bottom diameter of the limiting groove (11), so that the first abutting area (24) is formed between the limiting convex rib (21) and the groove bottom and the side wall of the limiting groove (11).

5. The multi-jaw valve lock collet of claim 2, wherein, A plurality of limiting convex ribs (21) are arranged on the valve lock clamp (2) along the axial direction of the valve (1), and the plurality of limiting convex ribs (21) are uniformly spaced.

6. The multi-jaw valve lock collet of claim 1, wherein, The clamping structure comprises a limiting boss (26), the abutting portion further comprises a second abutting area (25) arranged on the limiting boss (26), and the outer wall of the valve (1) is provided with a stepped portion (12) abutting against the second abutting area (25).

7. The multi-jawed valve lock clamp of claim 6, wherein, The limiting boss (26) is arranged between the two adjacent limiting convex ribs (21), and the protruding surface of the limiting boss (26) forms the second abutting area (25).

8. The multi-jawed valve lock clamp of claim 7, wherein, The protruding height of the limiting boss (26) is smaller than the protruding height of the limiting convex rib (21).

9. The multi-jawed valve lock clamp of claim 7, wherein, The avoiding portion comprises a second avoiding area (23) arranged between the limiting boss (26) and the adjacent limiting convex rib (21).

10. The multi-jaw valve lock collet of claim 1, wherein, The two multi-rib valve lock clamps (2) are abutted and fitted to form a hollow rotary body, and the inner diameter of the rotary body gradually decreases along the vertical downward direction.

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