CN113338725B

CN113338725B - Shock-resistant locking device

Info

Publication number: CN113338725B
Application number: CN202110513854.XA
Authority: CN
Inventors: 陈子宜
Original assignee: Zhejiang Shilian Automobile Door System Co ltd
Current assignee: Zhejiang Shilian Automobile Door System Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2023-05-05
Anticipated expiration: 2041-05-12
Also published as: CN113338725A

Abstract

The invention relates to the technical field of automobile door lock accessories, in particular to a shock-resistant locking device which comprises a shell, a matching plate and a shell cover, wherein the shell, the matching plate and the shell cover are sequentially connected from bottom to top, and a motor is embedded in the shell. According to the invention, the matched plate is additionally arranged between the shell and the shell cover, the flexible sealing adhesive tape is adopted at the joint of the matched plate, the shell and the shell cover to reduce vibration suffered by the inner element of the lock, the driven wheel for connecting the driving mechanism in the shell and providing a speed reducing function is arranged on the matched plate, and the spring is arranged at the joint of the middle wheel shaft of the driven wheel and the matched plate, so that abnormal function of the lock caused by dislocation of parts due to vibration is reduced, and compared with the traditional lock structure, the shock resistance and the vibration resistance of the lock are improved.

Description

Shock-resistant locking device

Technical Field

The invention relates to the technical field of automobile door lock accessories, in particular to a shock-resistant locking device.

Background

Along with the development of science and technology, the automobile gradually goes into each household, the lock bears a control device for providing locking or opening pulse current for the door lock actuating mechanism, and is an indispensable component in automobile door lock accessories.

However, in an actual use environment, the service life of the latch is often not ideal, and there are various reasons for this phenomenon, for example, the latch fails to work due to water leakage, such as a motor or an external control circuit, or is damaged inside the latch body or is abnormal in work due to other reasons, in many cases, the latch is damaged or functions due to poor damping performance, and the direct result caused by the damage of the latch is that safety cannot be guaranteed, and whether the latch cannot be locked normally or cannot be locked automatically after the travelling speed is increased, so that life and property threats are brought to people, and in combination with the latch currently used, the poor anti-seismic performance mainly occurs in the following aspects:

1. the outer shell of the lock is poor in shock resistance, and the internal gear of the lock is easy to be misplaced due to shock caused by violent closing of the vehicle door;

2. the gear is not easy to recover after dislocation due to collision vibration, the gear set is separated or broken due to the change of the stress point for a long time, and abnormal sound is generated;

3. in the telescopic reciprocation process of the lock tongue, the lock is inevitably touched inside the lock, and certain vibration and sound are generated;

to this end, a shock-resistant latch is proposed to solve the above-mentioned problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects existing in the prior art, the invention provides the anti-seismic lock, which can effectively solve the problem of poor anti-seismic performance of the lock in the prior art.

Technical proposal

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides a shock-resistant lock which comprises a shell, a matching plate and a shell cover, wherein the shell, the matching plate and the shell cover are sequentially connected from bottom to top, and a combined installation mode is adopted to facilitate the overhaul process of the lock:

the motor is embedded in the shell, a driving wheel is connected to an output shaft of the motor, a lock tongue rod capable of sliding back and forth is arranged on one side of the shell along the length direction, one side of the lock tongue rod penetrating through and extending out of the shell is connected with a lock tongue head, a buffer pin is arranged on the lock tongue rod, the rotation of the driving wheel drives the rotation of the driven wheel, and as the tooth diameter of the driven wheel is far greater than that of the driving wheel, the rotation period of the driven wheel is longer, a certain speed reducing function is achieved, and the lock tongue rod stretches and contracts in the sliding groove through the rotation of the driven wheel, so that the function of closing or driving an executing element is achieved;

the upper end face and the lower end face of the matching plate are respectively provided with a connecting piece matched with the shell and the shell cover, the matching plate is located at the corresponding side of the shell and is provided with a fixed arm, a driven wheel matched with the driving wheel and the lock tongue rod is arranged in the fixed arm, the joint of the driven wheel and the fixed arm is provided with a damping mechanism, the lower end face of the matching plate is provided with a collision rod used for limiting the lock tongue rod, a group of independent partition plates are arranged between the shell and the shell cover, and a certain damping mechanism is simultaneously assisted in the partition plates in a mode of separating the driven wheel from the shell, so that the risk of dislocation caused by vibration movement of the driven wheel can be effectively reduced.

Further, the edge of the upper end face of the shell is provided with a mounting hole, the side edge of the shell cover is provided with a contraposition hole which is correspondingly matched with the mounting hole on the shell, and the middle parts of the shell and the shell cover are oppositely matched and provided with a matching plate.

Further, the connecting piece is including installing the block pad at the terminal surface about the cooperation board, first block groove has been seted up to the edge of the up end of casing, the second block groove corresponding with first block groove has been seted up to the lower terminal surface of cap, block pad and first block groove and second block groove looks adaptation are installed through utilizing the cooperation board respectively with the mode of casing and cap gomphosis, have convenient counterpoint process between casing and the cap, have provided convenience for subsequent welding process.

Further, the material of block pad is ethylene propylene diene monomer sealing strip, the high adaptation of block pad is in the degree of depth in first block groove and second block groove, promotes the joint strength between joining in marriage board and casing and the cap, simultaneously through the compliance of adhesive tape, can reduce the vibration of collision or vibration induced lock self, provides certain shock-absorbing property for the lock.

Further, a group of oppositely distributed sliding grooves are formed in the lower end face of the shell, concave cavities corresponding to the lock tongue rods and sliding in a matched mode are formed in the inner sides of the two groups of mutually parallel sliding grooves, and the lock tongue rods can slide in a telescopic mode through the sliding grooves.

Further, a tooth groove is formed in one side, facing the driving wheel, of the lock tongue rod, the tooth groove is paved along the length direction of the lock tongue rod and is meshed with the driven wheel, and the lock tongue rod slides by means of the rotation of the driven wheel and the meshing between the driven wheel and the tooth groove.

Further, the buffer pin is of an elliptic cylinder structure, the buffer pin is arranged on one side, far away from the lock tongue, of the upper end face of the lock tongue rod, the buffer pin is utilized to limit the stroke of the lock tongue rod, limiting and damping are provided when the stroke end of the lock tongue rod is reached, and compared with the existing simple limiting clamping hole, vibration caused by direct collision to the shell is reduced.

Further, the conflict stick is the cylinder structure, installs perpendicularly at the lower terminal surface of joining in marriage the plywood, the conflict stick is established to four groups and two pair of symmetric distributions along spring bolt pole length direction, through setting up the conflict stick in the lower part of joining in marriage the plywood, utilizes the joint pad of joining in marriage the plywood periphery to touch between casing and the cap, carries out the shock attenuation.

Further, the conflict stick is elastic rubber stick, and the distance between two sets of conflict sticks is less than the buffer pin, adjacent two sets of the lower terminal surface of conflict stick just is to the up end of the dead bolt pole body, can further promote the shock-absorbing quality when spacing to the dead bolt pole through flexible conflict stick.

Further, the damping mechanism comprises a limiting groove arranged at the upper inner wall and the lower inner wall of the fixed arm, the limiting groove is correspondingly matched with the upper side and the lower side of a bearing in the middle of the driven wheel, a spring is arranged at the joint of the extending part of the upper side and the lower side of the bearing and the limiting groove, and the spring is arranged at the upper part and the lower part of the driven wheel, so that the driven wheel can be buffered to a certain extent when being collided with a large force, and meanwhile, the damping mechanism can be quickly reset and rebounded, and dislocation and rack damage caused by friction extrusion of a gear part due to collision and vibration are avoided.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

according to the invention, the matched plate is additionally arranged between the shell and the shell cover, the flexible sealing adhesive tape is adopted at the joint of the matched plate, the shell and the shell cover to reduce the vibration suffered by the inner element of the lock, meanwhile, the waterproof performance is increased to a certain extent, the driven wheel for connecting the driving mechanism in the shell and providing the speed reducing function is arranged on the matched plate, and the spring is arranged at the joint of the middle wheel shaft of the driven wheel and the matched plate, so that the abnormal function of the lock caused by the dislocation of parts due to vibration is reduced, and compared with the traditional lock structure, the shock resistance and the shock resistance of the lock are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the housing structure of the present invention;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a schematic side view of the housing structure of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4A according to the present invention;

FIG. 6 is a schematic diagram of the overall structure installation of the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6B according to the present invention;

FIG. 8 is a schematic view in partial cross section illustrating the operation of the present invention;

fig. 9 is a schematic view of the structure of the latch bolt of the present invention.

Reference numerals in the drawings represent respectively: 1. a housing; 101. a mounting hole; 102. a motor; 103. a driving wheel; 104. a dead bolt lever; 105. locking the tongue; 106. a first engagement groove; 107. tooth slots; 108. A buffer pin; 109. a sliding groove; 2. matching plates; 201. driven wheel; 202. a clamping pad; 203. A collision rod; 204. a fixed arm; 205. a bearing; 206. a limit groove; 207. a spring; 3. a cover; 301. an alignment hole; 302. and a second clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention is further described below with reference to examples.

Examples: the lock includes casing 1, cooperation board 2 and cap 3, and casing 1, cooperation board 2 and cap 3 are from down upwards connecting in order, and the week size of cooperation board 2 in this case is unanimous with the week size of casing 1 and cap 3 completely:

the motor 102 is embedded in the shell 1, the inside of the motor 102 used in the embodiment is formed by combining a permanent magnet synchronous motor and a reduction gearbox into a reversible synchronous micro motor, the reversible synchronous micro motor is connected with a control mechanism cable outside a lock, a driving wheel 103 is connected to an output shaft of the motor 102, the driving wheel 103 connected with the output shaft of the motor 102 in the embodiment can also be a worm and other connecting structures matched with a driven wheel 201, a bolt rod 104 capable of sliding back and forth is arranged on one side of the shell 1 along the length direction, the bolt rod 104 penetrates through and extends out of one side of the shell 1 to be connected with a bolt head 105, and a buffer pin 108 is arranged on the bolt rod 104;

wherein, the up and down terminal surfaces of joining in marriage the plywood 2 all are equipped with the connecting piece with casing 1 and cap 3 matched with, join in marriage the plywood 2 and be located the corresponding side of casing 1 simultaneously and install a fixed arm 204, install in the fixed arm 204 one with action wheel 103 and the mutual driven driving wheel 201 of cooperating of spring bolt pole 104, the joining in marriage the plywood 2 in this case is accomplished the back with casing 1, action wheel 103 can mesh with the half of the vertical height from driving wheel 201, the junction of driven wheel 201 and fixed arm 204 is equipped with damper, the lower terminal surface of joining in marriage the plywood 2 is installed and is used for giving the spacing conflict stick 203 of spring bolt pole 104.

Referring to fig. 1, an installation hole 101 is formed at the edge of the upper end surface of a casing 1, a counterpoint hole 301 corresponding to the installation hole 101 on the casing 1 is installed at the side edge of the casing cover 3, two groups of holes can be connected in an auxiliary manner through screws and nuts, a matching plate 2 is installed at the middle part of the casing 1 and the casing cover 3 in a butt joint manner, and compared with the traditional manner of directly welding the casing cover 3 and the casing 1 in a combined installation manner, the airtight waterproof performance of the casing is improved through the special structure of the matching plate 2.

Referring to fig. 1, the connecting piece includes a clamping pad 202 installed on the upper and lower end surfaces of the mating board 2, in this example, the clamping pad 202 and the mating board 2 are integrally formed, the bottom of the clamping pad 202 extends into the mating board 2, meanwhile, the connecting part has high hardness and is not easy to fall off or bend and deform, a first clamping groove 106 is formed at the edge of the upper end surface of the housing 1, a second clamping groove 302 corresponding to the first clamping groove 106 is formed at the lower end surface of the housing cover 3, and the clamping pad 202 and the first clamping groove 106 are matched with the second clamping groove 302.

Referring to fig. 1, the material of the clamping pad 202 is an ethylene propylene diene monomer sealing strip, in this embodiment, the clamping pad 202 may also be a sealing strip with other damping effects and stretching effects and wear-resisting functions, for example, a silica gel sealing strip, a rubber plastic strip, etc., and in this embodiment, the clamping pad 202 is preferably an ethylene propylene diene monomer sealing strip, and the height of the clamping pad 202 is adapted to the depths of the first clamping groove 106 and the second clamping groove 302, so that the waterproof performance and the damping performance of the clamping pad can be improved by utilizing the characteristics of the sealing strip.

Referring to fig. 4 and 9, a set of sliding grooves 109 are oppositely distributed on the lower end surface of the casing 1, on the driving mode of the latch rod 104, and concave cavities corresponding to the latch rod 104 and sliding in a matched mode are arranged on the inner sides of the two sets of sliding grooves 109 which are parallel to each other.

Referring to fig. 2 and 8, a tooth groove 107 is disposed on a side of the lock tongue rod 104 facing the driving wheel 103, the tooth groove 107 is laid along a length direction of the lock tongue rod 104 and is meshed with the driven wheel 201, and a speed reducing gear can be additionally disposed between the lock tongue rod 104 and the driven wheel 201 in a practical use process.

Referring to fig. 9, the buffer pin 108 has an elliptical cylinder structure, the buffer pin 108 is mounted on one side of the upper end surface of the latch bolt 104 away from the latch bolt 105, the length direction of the buffer pin is set along the length direction of the latch bolt 104, and the height dimension and the extension length of the buffer pin 108 are set in combination with the overall length of the latch and the required travel of the latch bolt 104 during actual use.

Referring to fig. 5, the abutting rods 203 are of a cylindrical structure and are vertically installed on the lower end surface of the matching plate 2, the abutting rods 203 are four groups and are symmetrically distributed in pairs along the length direction of the locking bolt 104, wherein the distance between two groups of abutting rods 203 matched with each other is the same as the actual moving stroke of the locking bolt 104, meanwhile, the distance between the arrangement areas of the abutting rods 203 and the edges of the two sides of the matching plate 2 is about 1 cm to 2cm, and the distance between the two edges can be adjusted in combination with the actual use environment so as to control the stroke of the locking bolt 104, thereby providing the best damping effect for the locking bolt 104.

Referring to fig. 5, the abutting rods 203 are made of elastic rubber rods, the distance between two sets of abutting rods 203 is smaller than the buffer pin 108, the lower end faces of two adjacent sets of abutting rods 203 are opposite to the upper end face of the rod body of the lock tongue rod 104, and after the abutting installation of the matching plate 2 and the shell 1 is completed, the height of each abutting rod 203 is 1/4 of the bottom of the buffer pin 108, so that an optimal stress point is provided, and an optimal damping effect is achieved.

Referring to the figure, the damping mechanism includes a limit slot 206 disposed at the upper and lower inner walls of the fixed arm 204, the upper and lower sides of the limit slot 206 and a bearing 205 in the middle of the driven wheel 201 are correspondingly matched, a spring 207 is installed at the extending part of the upper and lower sides of the bearing 205 and the connecting part of the limit slot 206, the spring 207 in this example can also be replaced by other elastic members, after the driven wheel 201 and the driving wheel 103 are engaged, the engaging part of the driven wheel 201 and the driving wheel 103 is about 3/4 of the whole height of the driving wheel 103, the up and down bouncing range of the elastic members does not exceed 1/4 of the height of the driving wheel 103, and in combination with practical use environment, in some vehicles frequently subjected to high-intensity vibration, the height of the driving wheel 103 and the driven wheel 201 and the height of the engaging range can be properly adjusted to prevent the loosening of the driving wheel 103 and the driven wheel 201 caused by excessive vibration.

For ease of understanding, the principles of operation and methods of use of a shock resistant latch will be discussed.

In the mounting process of the lock, a group of matching plates 2 which are mutually matched with the shell 1 and the shell cover 3 are additionally arranged between the shell 1 and the shell cover 3, and a damping colloid is arranged at the joint between the matching plates 2 and the shell 1 and the shell cover 3, so that the influence of external vibration on internal elements is avoided to be excessive, and meanwhile, compared with the traditional mode of directly placing the driven wheel 201 in the shell 1 to be meshed with the driving wheel 103, the separation of the driven wheel 201 caused by vibration can be avoided;

during normal running of the vehicle, the driven wheel 201 and the driving wheel 103 are relatively static, when the driven wheel 201 receives vibration force in the vertical direction, the driven wheel 201 can displace for a certain distance in the direction of the force, so that a spring 207 at the joint of an axle in the middle of the driven wheel 201 and a limit groove 206 can be extruded, the driven wheel 201 can be reset to the original meshing point of the driving wheel 103 under the action of the elastic force of the spring 207, and the gear set is prevented from being broken or damaged finally due to the change of the stress point caused by irrecoverability;

in the advancing process of the lock tongue 104, when the port of the lock tongue 104 is close to the inner wall of the shell 1, the buffer pins 108 at the top end of the lock tongue 104 are extruded and collide with the collision rods 203, the vibration caused by the fact that the lock tongue 104 touches the port of the shell 1 is reduced when the lock tongue 104 is limited by the elastic force of the collision rods 203, the service life of the lock tongue 104 is prolonged, when the lock tongue 104 is retracted, the buffer pins 108 at the other side are interfered with the other group of the collision rods 203, the force limited by the collision rods 203 can rise in a step mode through the cambered surface on the two sides of the buffer pins 108, the buffer effect is achieved, and the shock absorbing effect is improved.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a resistant shock-resistant lock, its characterized in that includes casing (1), cooperation board (2) and cap (3), casing (1), cooperation board (2) and cap (3) are from down upwards connecting in order:

the novel anti-theft lock comprises a shell (1), and is characterized in that a motor (102) is embedded in the shell (1), an output shaft of the motor (102) is connected with a driving wheel (103), a lock tongue rod (104) capable of sliding in a reciprocating manner is arranged on one side of the shell (1) extending in the length direction, the lock tongue rod (104) penetrates through and extends out of one side of the shell (1) to be connected with a lock tongue head (105), and a buffer pin (108) is arranged on the lock tongue rod (104);

the upper end face and the lower end face of the matching plate (2) are respectively provided with a connecting piece matched with the shell (1) and the shell cover (3), meanwhile, a fixed arm (204) is arranged on the corresponding side of the matching plate (2) positioned on the shell (1), a driven wheel (201) matched with the driving wheel (103) and the lock tongue rod (104) is arranged in the fixed arm (204), a damping mechanism is arranged at the joint of the driven wheel (201) and the fixed arm (204), and a collision rod (203) used for limiting the lock tongue rod (104) is arranged on the lower end face of the matching plate (2);

the damping mechanism comprises a limiting groove (206) arranged at the upper inner wall and the lower inner wall of a fixed arm (204), the limiting groove (206) is correspondingly matched with the upper side and the lower side of a bearing (205) in the middle of a driven wheel (201), and a spring (207) is arranged at the joint of the extending part of the upper side and the lower side of the bearing (205) and the limiting groove (206).

2. The anti-seismic lock according to claim 1, wherein the edge of the upper end face of the housing (1) is provided with a mounting hole (101), the side edge of the housing cover (3) is provided with an alignment hole (301) correspondingly matched with the mounting hole (101) on the housing (1), and the middle parts of the housing (1) and the housing cover (3) are oppositely combined and provided with a matching plate (2).

3. The anti-seismic lock according to claim 2, wherein the connecting piece comprises a clamping pad (202) arranged on the upper end face and the lower end face of the matching plate (2), a first clamping groove (106) is formed in the edge of the upper end face of the shell (1), a second clamping groove (302) corresponding to the first clamping groove (106) is formed in the lower end face of the shell cover (3), and the clamping pad (202) and the first clamping groove (106) are matched with the second clamping groove (302).

4. A shock resistant latch according to claim 3 wherein the engagement pad (202) is made of an ethylene propylene diene monomer sealing strip, and the height of the engagement pad (202) is adapted to the depth of the first engagement groove (106) and the second engagement groove (302).

5. The anti-seismic lock according to claim 1, wherein the lower end face of the housing (1) is provided with a set of oppositely distributed sliding grooves (109), and the inner sides of the two sets of mutually parallel sliding grooves (109) are provided with concave cavities correspondingly matched with the lock tongue rods (104) for sliding.

6. The shock resistant latch according to claim 1, wherein the latch rod (104) is provided with a tooth slot (107) on the side facing the driving wheel (103), said tooth slot (107) being laid along the length of the latch rod (104) and being intermeshed with the driven wheel (201).

7. The shock resistant latch of claim 1 wherein said buffer pin (108) is of an elliptical cylindrical configuration, said buffer pin (108) being mounted on a side of the upper end face of the deadbolt stem (104) remote from the latch tongue (105).

8. The shock-resistant locking device according to claim 7, wherein the abutting rods (203) are of a cylindrical structure and are vertically arranged on the lower end face of the matching plate (2), and the abutting rods (203) are four groups and are symmetrically distributed in pairs along the length direction of the lock tongue rod (104).

9. The shock-resistant locking device according to claim 1, wherein the abutting rods (203) are made of elastic rubber rods, the distance between two abutting rods (203) is smaller than the buffer pin (108), and the lower end faces of the adjacent abutting rods (203) are right opposite to the upper end face of the rod body of the lock tongue rod (104).