CN217712117U - Pull wire lock - Google Patents

Abstract

The utility model relates to a linear reciprocating lock field, in particular to a stay wire lock, which uses the stay wire part and the reciprocating motion brought by the combination of the rocker arm and the lock fork, and the rocker arm can drive the lock fork to rotate as long as the end part of the stay wire is dragged, thereby the lock rod is withdrawn from the locking area, and the phenomenon that the express cabinet can not be opened due to power failure is eliminated; the lock fork of the utility model is a movable part which can move outside the lock shell, so that the lock rod and the lock shell do not have the condition of contact, thereby avoiding the condition that the lock rod and the lock shell are contacted to cause locking failure; the utility model discloses have the dead function of second grade lock, specifically realize by first block region on the lock fork, second block region, under the dead mode of one-level lock, the locking lever is not accomplished the lock and is died in the lock fork to this avoids the possibility of tong.

Description

Pull wire lock

Technical Field

The utility model relates to a linear reciprocal tool to lock field indicates a stay wire lock especially.

Background

A lockset is a common living appliance, and has multiple safety functions in daily use.

The kind of tool to lock has a lot of varieties, and most tool to lock can all be applied to in the environment of difference according to self structure moreover, just so, and the very strong tool to lock of this kind of general usefulness can solve the problem that most related to safety in life.

At present, after the lock is upgraded, a remote electric control mode is used for remotely powering on and unlocking, such as an express cabinet lock, but the lock needs to be used under the condition of power supply, the door cannot be opened when power is cut off, and a set of control circuit is needed for driving;

moreover, the locking principle of such locks does not change much from before: locking by a bolt and plug; this kind of lock of dress in express delivery cabinet still can appear unable completion action of unblanking because, the precision that this kind of tool to lock required door and frame is than higher, otherwise, can collapse the dead spring bolt in top, leads to the electro-magnet to be unable to withdraw the bolt.

The lock with wider universality is particularly applied to engine covers, bin door covers and the like, and because the lock lacks the function of segmented locking, the door can be closed in place at one time, and hands, clothes or other objects are easy to clamp.

Disclosure of Invention

In order to solve the problem, the utility model provides a stay wire lock, its main objective aims at solving among the prior art because the outage leads to the unable problem of opening of tool to lock.

The secondary purpose is to solve the problem that the locking cannot be caused due to low precision of the device.

It is a further object to solve the problem of easy gripping of the hand.

In order to achieve the purpose, the utility model adopts the technical proposal that: a pull-cord lock, comprising:

a lock case having a locking notch for the lock rod to enter;

the lock fork can do reciprocating motion in the lock shell, and pulls the lock rod into the lock opening to form a locking area with the lock shell;

and a rocker arm connected with a pull wire and having a first rotation direction for withdrawing the lock fork from the locking area.

Preferably, the locking fork is exposed from the locking notch during the reciprocating movement.

Preferably, the part of the locking fork forming the locking area is a notch, the inner surface of the notch is an open curved surface, and the edge of the curved surface is provided with a guide surface extending outwards and obliquely.

Preferably, the lock further comprises a ratchet mechanism, and the lock fork is connected with the rocker arm through the ratchet mechanism.

Preferably, the elastic components are arranged at least two, any one of the elastic components is arranged on the rocker arm and pulls the lock fork to move towards the direction of the rocker arm, and the other elastic component is arranged on the rocker arm and pushes against the inner side of the lock shell.

Preferably, the ratchet structure comprises a pawl and a ratchet, the pawl is connected to the rocker arm, and the ratchet is formed by arranging ratchet teeth on the lock fork.

Preferably, the ratchet wheel is provided with cambered surfaces connected with two sides of the ratchet wheel teeth, the two cambered surfaces and the ratchet wheel teeth form a first clamping area and a second clamping area for positioning the pawl, and the two cambered surfaces are partially or completely attached to the side surfaces of the pawl respectively.

The beneficial effects of the utility model reside in that:

1. the component of the stay wire and the reciprocating motion caused by the combination of the rocker arm and the lock fork are used, and the rocker arm can drive the lock fork to rotate as long as the end part of the stay wire is dragged, so that the lock rod is withdrawn from the locking area, and the phenomenon that the express cabinet cannot be opened due to power failure is eliminated.

2. The utility model discloses a lock fork is the movable part, can move toward the lock shell outward for the condition that does not have the contact between locking lever and the lock shell, thereby avoid the locking lever to lead to the condition of unable locking with the lock shell contact.

3. The utility model discloses have the dead function of second grade lock, specifically realize by first block region on the lock fork, second block region, under the dead mode of one-level lock, the locking lever is unfinished the lock and is died in the lock fork to this avoids the possibility of tong.

Drawings

Fig. 1 is a schematic structural view of a locked state.

Fig. 2 is a schematic diagram of a one-stage lock-up state.

FIG. 3 is a schematic diagram of a two-stage locking state

Fig. 4 is a perspective view of the present invention.

Fig. 5 is a perspective view of the rocker arm and lock housing connection.

Fig. 6 is a structural view of the locking fork.

Fig. 7 is an internal structure view of the present invention in the locked state.

Fig. 8 is an internal structure view of another viewing surface of the present invention in the locked state.

Fig. 9 is an internal structure view of the present invention in an unlocked state.

Fig. 10 is an internal structure view of another viewing surface of the present invention in an unlocked state.

The reference numbers illustrate: 1-a lock case; 2-a lock fork; 3-a rocker arm; 4-locking the opening; 6-locking bar;

7-curved surface; 8-a guide surface; 9-a first torsion spring; 10-a second torsion spring; 1101-a clamping part;

1102 — a first side; 1103-second side; 200-pawl; 201-ratchet teeth;

202-a first snap-fit area; 203-second engagement area.

Detailed Description

Referring to fig. 1-10, the present invention relates to a pull-string lock, which comprises a lock case 1, a lock fork 2, a rocker arm 3, and a pull-string, wherein the lock case 1 is provided with a lock opening 4, the lock opening 4 extends from the side of the lock case 1 to the center of the lock case 1, the rocker arm 3 and the lock fork 2 are rotatably disposed in the lock case 1, a part of the rocker arm 3 extends out of the lock case 1, and the extending part is connected with the pull-string, wherein the rocker arm 3 and the lock fork 2 are connected, and the lock fork 2 can rotate oppositely to the rocker arm 3 by pulling the pull-string, so that the lock rod 6 can be withdrawn from the lock case 1.

It should be noted that, there is a notch on the lock fork 2, this notch can constitute the locking region with the inner wall of fore shaft 4 in fore shaft 4, under the effect of rocking arm 3, the notch can be followed the fore shaft 4 and unscrewed, for example, rocking arm 3 has anticlockwise pivoted first direction of rotation, makes the lock fork 2 withdraw from in the locking region, and locking lever 6 has lacked the restriction of fore shaft 4, withdraws from the notch, accomplishes this process of unblanking.

According to the above, the locking fork 2 is driven by the rocker arm 3, and the partial area of the locking fork 2 is exposed outside the locking notch 4, and therefore, the possibility that the potential locking rod 6 is contacted with the lock shell 1 is eliminated, and the problem that locking is influenced by accuracy in the prior art is solved.

Preferably, the inner surface of the notch is an open curved surface 7, the edge of the curved surface 7 is provided with a guide surface 8 extending outwards and obliquely, the lock rod 6 is cylindrical, the open curved surface can reduce the friction of the lock rod 6 withdrawing from the notch or entering the notch, so that the lock rod 6 keeps smooth in the whole locking movement, and the guide surface 8 is used for enabling the lock rod 6 to enter the notch more easily.

In the embodiment, the rocker arm 3 and the lock fork 2 are connected through the ratchet mechanism, and under the environment of a car engine cover, a passenger car trunk door and the like, the problem that a lock is pried in the prior art can be solved under the action of the ratchet mechanism.

The relationship between the ratchet mechanism, the lock fork 2 and the rocker arm 3 is maintained by elastic parts, wherein the elastic parts are a first torsion spring 9 and a second torsion spring 10, the first torsion spring 9 is sleeved on a rotating shaft of the rocker arm 3, and the second torsion spring 10 is sleeved on a rotating shaft of the ratchet.

The ratchet structure consists of a pawl 200 and a ratchet, the pawl 200 is connected to a rocker arm 3, the ratchet is formed by arranging ratchet teeth 201 on a lock fork 2, meanwhile, a contact surface with radian is arranged between the rocker arm and the pawl, the first end of a first torsion spring 9 is turned over from one side of the rocker arm to the other side of the rocker arm along the contact surface to form a clamping part 1101 for clamping the pawl and the ratchet teeth in a specific working stage, and the second end of the clamping part is abutted against the inner side of the lock shell 1;

the fork 2 has two opposite first surfaces 1102 and second surfaces 1103, a first end of the second torsion spring 10 abuts against the inside of the lock case 1, and a second end of the second torsion spring has the same structure as the first end of the first torsion spring, and both the first end and the second end of the second torsion spring are used for clamping the ratchet teeth on the fork 2 to abut against the pawl in a specific working stage, specifically, the second end of the second torsion spring 10 bypasses a section of the peripheral surface of the fork 2 from the first surface 1102 and is folded along the area of the second surface 1103.

Preferably, the ratchet wheel has an arc surface connected with two sides of the ratchet wheel teeth 201, the two arc surfaces and the ratchet wheel teeth 201 form a first clamping area 202 and a second clamping area 203 for positioning the pawl 200, and the two arc surfaces are respectively attached to the side surface of the pawl 200 partially or completely; this kind of ratchet structure is the one-way drive, therefore, the first block region 202 of both sides at ratchet tooth 201, the area of second block region 203 are inequality, specifically, second block region 203 and pawl 200 side are laminated completely, first block region 202 and pawl 200 side part contact, so the opening of second block region 203 is greater than the opening of first block region 202, combine the foregoing, to the principle of the utility model is explained in further detail:

the lock rod 6 is arranged on the door, in a locking state, the second end of the first torsion spring 9 and the first end of the second torsion spring 10 are in a compression state, the pawl 200 is clamped in the second clamping area 203, when the locking state is switched to an unlocking state, the counterclockwise state of the rocker arm 3 firstly pushes the ratchet teeth 201 to enable the ratchet to clockwise rotate for a certain stroke until the tail end of the pawl 200 slides over the top end of the ratchet teeth 201, after the first end of the second torsion spring 10 loses external acting force, the first end can rebound due to self stress and drive the ratchet to do counterclockwise motion, the rebound force of the second torsion spring 10 can enable the ratchet to rapidly rotate, therefore, the pawl 200 cannot be clamped in the first clamping area 202 and directly passes through the first clamping area 202 to be in contact with the periphery of the ratchet, meanwhile, the contact of the pawl 200 and the ratchet can enable the ratchet to keep a relatively static state, the gap is positioned outside the lock opening 4, and the lock rod 6 retreats from the gap;

the door closing motion can make the lock rod 6 enter the gap, and the door closing motion can also make the lock rod 6 apply force to one side of the gap to make the ratchet wheel move clockwise until the pawl 200 is clamped in the first clamping area 202, which is a first-stage locking state in the scheme, in which the door is not completely closed and is used for reminding a user to check whether an object is clamped or not, as can be seen from fig. 2, the locking area is not closed at this time;

when continuing to close the door action, the utility model discloses can switch to the dead state of second grade lock, locking lever 6 can continue to impel one side of breach, and anticlockwise rotation is done to the ratchet, seals until whole locking region, and pawl 200 block is in second block region 203.

The above embodiments are only described as preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (7)

1. A pull-cord lock, comprising:

a lock case having a locking notch for the lock rod to enter;

the lock fork can do reciprocating motion in the lock shell, and pulls the lock rod to enter the lock opening to form a locking area with the lock shell;

and a rocker arm connected with a pull wire and having a first rotation direction for withdrawing the lock fork from the locking area.

2. A pull-cord lock as claimed in claim 1, wherein the locking fork is exposed to the outside of the mouth during the reciprocal movement.

3. A pull-cord lock according to claim 1, wherein: the part of the lock fork forming the locking area is a notch, the inner surface of the notch is an open curved surface, and the edge of the curved surface is provided with a guide surface extending outwards and obliquely.

4. A pull-cord lock according to claim 1, wherein: the lock fork is connected with the rocker arm through the ratchet mechanism.

5. A pull-cord lock according to claim 1, wherein: and at least two elastic components are arranged, any one of the elastic components is arranged on the rocker arm and pulls the lock fork to draw close towards the direction of the rocker arm, and the other elastic component is arranged on the rocker arm and pushes against the inner side of the lock shell.

6. A pull-cord lock according to claim 4, wherein: the ratchet structure comprises pawl and ratchet, and the pawl is connected on the rocking arm, and the ratchet is set up ratchet tooth on the lock fork and forms.

7. A pull-cord lock according to claim 6, wherein: the ratchet wheel is provided with cambered surfaces connected with two sides of the ratchet wheel teeth, the two cambered surfaces and the ratchet wheel teeth form a first clamping area and a second clamping area which are used for positioning the pawl, and the two cambered surfaces are respectively attached to the side surfaces of the pawl or are completely attached to the side surfaces of the pawl.

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