Ratchet and pawl mechanism of door lock
By setting a plastic-coated surface at the engagement point of the pawl and ratchet, the ratchet preferentially contacts the plastic-coated surface of the pawl for buffering, which solves the problem of loud engagement noise in the door lock body and improves the sound quality of the door lock.
Patent Information
- Application Number
- CN202422921453.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The existing door lock body produces a lot of noise during the closing and opening process due to the direct collision or disengagement of the ratchet and pawl, which affects the sound quality.
A plastic-coated surface is provided at the engagement point between the pawl and the ratchet, making it higher than the insert. The ratchet first contacts the plastic-coated surface of the pawl for buffering before contacting the insert, thus reducing noise.
It effectively reduces the noise when the ratchet and pawl engage, improving the quality of the door lock body.
Smart Images
Figure CN223724372U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to door lock technical field, concretely is a door lock ratchet and pawl mechanism. BACKGROUND
[0002] Generally, the meshing point of the two positions of the ratchet wheel and the pawl of the door lock body is the contact of the ratchet wheel insert and the pawl insert, the structure is more common, the ratchet wheel and the pawl will engage more firmly, but at the same time, due to the collision between the two metal pieces of the ratchet wheel insert and the pawl insert, it will cause the door lock body to produce a larger noise when the ratchet wheel and the pawl collide or separate during closing and opening, which is definitely not suitable for customers with high sound quality requirements. Therefore, we propose a door lock ratchet and pawl mechanism. UTILITY MODEL CONTENTS
[0003] The utility model discloses a door lock ratchet and pawl mechanism, which has a plastic-coated surface of the ratchet wheel that preferentially contacts the pawl, and the ratchet wheel contacts the insert after buffering, greatly reducing noise and improving the quality of the door lock body. The utility model solves the problem of a larger noise produced when the ratchet wheel and the pawl collide or separate during closing and opening of the door lock body.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a door lock ratchet and pawl mechanism, comprising a ratchet wheel and a pawl, a plastic-coated surface is provided at the meshing position of the pawl and the ratchet wheel, and the plastic-coated surface is higher than the insert. During the meshing process of the ratchet wheel and the pawl, the ratchet wheel preferentially contacts the plastic-coated surface of the pawl.
[0005] Preferably, the plastic-coated surface is 0.3mm higher than the insert, and the width of the plastic-coated surface of the pawl at the upper and lower ends is 0.5mm.
[0006] Preferably, the pawl is movably sleeved on a pawl shaft below the lock body, and the pawl rotates along the pawl shaft. The pawl is used to interfere with the rotation of the ratchet wheel. The pawl is in contact with a pawl return spring provided on the fixed shaft of the lock body, and has a resetting function.
[0007] Preferably, the ratchet wheel is movably sleeved on a ratchet wheel shaft below the lock body, and the ratchet wheel rotates along the ratchet wheel shaft. The ratchet wheel has a lock catch opening that can engage a vehicle door lock catch. A ratchet wheel return spring is further fixedly arranged between the ratchet wheel shaft and the lock body, and has a resetting function.
[0008] Preferably, the unlocking state of the ratchet wheel and the pawl is that the pawl rotates counterclockwise along the pawl shaft, and after rotating to a specific angle, the pawl is separated from the ratchet wheel. The ratchet wheel rotates counterclockwise around the ratchet wheel shaft under the force of the spring, and the ratchet wheel is separated from the vehicle door lock catch ring, and the vehicle door is opened.
[0009] Preferably, the half-locking state of the ratchet wheel and the pawl is that the lock catch ring presses the ratchet wheel to rotate clockwise along the ratchet wheel shaft, and after rotating to a specific angle, the ratchet wheel is engaged with the pawl for the first time, i.e. the half-locking position. Preferably, the half-locking state of the ratchet wheel and the pawl is that the lock catch ring presses the ratchet wheel to rotate clockwise along the ratchet wheel shaft, and after rotating to a specific angle, the ratchet wheel is engaged with the pawl for the first time, i.e. the half-locking position.
[0010] Preferably, the full lock state of the ratchet and pawl is that the locking ring continues to press the ratchet to rotate clockwise along the ratchet shaft to a specific angle to be engaged with the pawl for the second time, i.e. the full lock position, and the door is closed.
[0011] Compared with the prior art, the utility model has the beneficial effects as follows:
[0012] The utility model discloses a difference from the traditional ratchet and pawl directly engaged through the embedding mode, and the structure is optimized, the plastic covering surface of the thickened pawl and the ratchet is engaged, is higher than embedding 0.3mm, makes the ratchet and pawl in the process of engaging, and the ratchet contacts the plastic covering surface of the pawl first, and then contacts the embedding after buffering, greatly reduces the noise, improves the quality of the door lock body, simultaneously, the width of the plastic covering upper and lower ends of the pawl is only 0.5mm, does not affect the normal engagement of the ratchet and pawl. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the working state schematic view of the ratchet and pawl of the door lock body of the utility model;
[0014] Figure 2 It is the half lock state engagement schematic view of the ratchet and pawl of the door lock body of the utility model;
[0015] Figure 3 It is the full lock state engagement schematic view of the ratchet and pawl of the door lock body of the utility model;
[0016] Figure 4 It is the opening state schematic view of the ratchet and pawl of the door lock body of the utility model;
[0017] Figure 5 It is the structure schematic view of the optimized pawl of the door lock body of the utility model;
[0018] Figure 6 It is the utility model Figure 5 It is the enlarged schematic view of B;
[0019] Figure 7 It is the assembly schematic view of the optimized pawl and ratchet of the door lock body of the utility model;
[0020] Figure 8 It is the utility model Figure 7 It is the sectional view of A-A.
[0021] In the drawing: 1, pawl;2, ratchet;3, pawl shaft;4, ratchet shaft;5, pawl return spring;6, ratchet return spring. DETAILED DESCRIPTION
[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.
[0023] As shown in Figure 1 A door lock ratchet pawl mechanism, comprising a pawl 1 and a ratchet wheel 2, the engagement between the pawl 1 and the ratchet wheel 2 is provided with a plastic-coated surface, and the plastic-coated surface is higher than the insert, in the process of engagement, the ratchet wheel 2 first contacts the plastic-coated surface of the pawl 1.
[0024] The plastic-coated surface is 0.3mm higher than the insert, as shown in Figure 8 The plastic-coated surface is a plastic layer arranged outside the insert, and the insert is a ratchet wheel insert and a pawl insert, both of which are metal parts. The width of the upper and lower ends of the plastic-coated pawl 1 is 0.5mm, as shown in Figure 8 On the basis of the original structure, the plastic-coated surface of the engagement between the pawl 1 and the ratchet wheel 2 is thickened by 0.3mm, so that in the process of engagement, the ratchet wheel 2 first contacts the plastic-coated surface of the pawl 1, and then contacts the insert after buffering, greatly reducing the noise and improving the quality of the door lock body. At the same time, the width of the upper and lower ends of the plastic-coated pawl 1 is only 0.5mm, which does not affect the normal engagement of the pawl 1 and the ratchet wheel 2.
[0025] The pawl 1 is movably sleeved on the pawl shaft 3 below the lock body, the pawl 1 rotates along the pawl shaft 3, the pawl 1 is used for interfering with the rotation of the ratchet wheel 2, the pawl 1 is in contact with the pawl return spring 5 arranged on the fixed shaft of the lock body, and the pawl return spring 5 plays a resetting role.
[0026] The ratchet wheel 2 is movably sleeved on the ratchet wheel shaft 4 below the lock body, the ratchet wheel 2 rotates along the ratchet wheel shaft 4, the ratchet wheel 2 has a lock catch opening capable of clamping a vehicle door lock catch, and the ratchet wheel shaft 4 and the lock body are further fixedly provided with a ratchet wheel return spring 6 therebetween, which plays a resetting role.
[0027] The unlocking state of the pawl 1 and the ratchet wheel 2 is that the pawl 1 rotates counterclockwise along the pawl shaft 3, and after rotating to a specific angle, the pawl 1 is separated from the ratchet wheel 2, the ratchet wheel 2 rotates counterclockwise around the ratchet wheel shaft 4 under the spring force, the ratchet wheel 2 is separated from the vehicle door lock catch ring, and the vehicle door is opened.
[0028] The half-locking state of the pawl 1 and the ratchet wheel 2 is that the lock catch ring presses the ratchet wheel 2 to rotate clockwise along the ratchet wheel shaft 4, and rotates to a specific angle to be engaged with the pawl 1 for the first time, that is, the half-locking position.
[0029] When pawl 1 and ratchet 2 are fully locked, the locking ring continues to press ratchet 2 in the half-lock position, causing it to rotate clockwise along ratchet shaft 4. When it rotates to a specific angle, it engages with pawl 1 for the second time, which is the fully locked position, and the door is closed.
[0030] like Figure 2 As shown, when the car door is opened, the pawl 1 rotates counterclockwise along the pawl shaft 3. After rotating to a specific angle, the pawl 1 separates from the ratchet 2. The ratchet 2 rotates counterclockwise around the ratchet shaft 4 under the force of the spring. The ratchet 2 disengages from the door lock ring, and the car door opens.
[0031] like Figure 3 As shown, when the car door is closed, the latch ring squeezes the ratchet 2 to rotate clockwise along the ratchet shaft 4. When it rotates to a specific angle, it engages with the pawl 1 for the first time, which is the half-lock position.
[0032] like Figure 4 As shown, when the locking ring is in the half-lock position, it continues to press the ratchet 2 to rotate clockwise along the ratchet shaft 4. When it rotates to a specific angle, it engages with the pawl 1 for the second time, which is the fully locked position, and the door is closed.
[0033] like Figure 5 As shown, the structure of the pawl 1 is optimized and improved, and the plastic-coated structure of the pawl 1 is improved on the basis of the original structure.
[0034] like Figure 6 As shown, by improving the structure of the plastic coating on the pawl 1, the ratchet 2 first contacts the plastic coating of the pawl 1 for buffering before engaging with the insert of the pawl 1 during the engagement process, which effectively reduces the noise generated by the engagement of the ratchet and pawl 1.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A door lock ratchet and pawl mechanism comprising a pawl (1) and a ratchet (2) characterised in that: The pawl (1) and the ratchet wheel (2) are engaged, and the plastic surface is higher than the embedded part, the ratchet wheel (2) contacts the plastic surface of the pawl (1) first in the engagement process. The plastic surface is 0.3mm higher than the embedded part, and the width of the plastic surface of the pawl (1) is 0.5mm.
2. A door lock ratchet and pawl mechanism according to claim 1 wherein: The pawl (1) is movably sleeved on the pawl shaft (3) below the lock body, the pawl (1) rotates along the pawl shaft (3), the pawl (1) is used for interfering with the rotation of the ratchet wheel (2), the pawl (1) contacts the pawl return spring (5) arranged on the fixed shaft of the lock body, and the pawl (1) has a reset function.
3. A door lock ratchet and pawl mechanism according to claim 2 wherein: The ratchet wheel (2) is movably sleeved on the ratchet wheel shaft (4) below the lock body, the ratchet wheel (2) rotates along the ratchet wheel shaft (4), the ratchet wheel (2) has a lock catch opening capable of engaging the car door lock catch, and the ratchet wheel shaft (4) and the lock body are further provided with the ratchet wheel return spring (6) fixedly arranged therebetween, and the ratchet wheel return spring (6) has a reset function.
4. A door lock ratchet and pawl mechanism according to claim 3 wherein: The unlocking state of the pawl (1) and the ratchet wheel (2) is that the pawl (1) rotates counterclockwise along the pawl shaft (3), and after rotating to a specific angle, the pawl (1) is separated from the ratchet wheel (2), the ratchet wheel (2) is rotated counterclockwise around the ratchet wheel shaft (4) under the spring force, the ratchet wheel (2) is separated from the car door lock catch ring, and the car door is opened.
5. A door lock ratchet and pawl mechanism according to claim 3 wherein: The half-locking state of the pawl (1) and the ratchet wheel (2) is that the lock catch ring presses the ratchet wheel (2) to rotate clockwise along the ratchet wheel shaft (4), and rotates to a specific angle to be engaged with the pawl (1) for the first time, that is, the half-locking position.
6. A door lock ratchet and pawl mechanism as claimed in claim 3 wherein: The full-locking state of the pawl (1) and the ratchet wheel (2) is that the lock catch ring continues to press the ratchet wheel (2) to rotate clockwise along the ratchet wheel shaft (4) at the half-locking position, and rotates to a specific angle to be engaged with the pawl (1) for the second time, that is, the full-locking position, and the car door is closed.