CN110939325B

CN110939325B - Door mechanical mute lock

Info

Publication number: CN110939325B
Application number: CN201911239786.1A
Authority: CN
Inventors: 杨珩; 刘海斌; 杨华
Original assignee: Liuzhou Vocational and Technical College
Current assignee: Liuzhou Vocational and Technical College
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2024-05-17
Anticipated expiration: 2039-12-06
Also published as: CN110939325A

Abstract

The invention relates to a door mechanical mute lock which comprises a movable lock body, a fixed lock body and two door handles, wherein the movable lock body comprises a movable lock body shell, a pressure spring I, a spring baffle, a lock tongue and a movable lock body baffle, the fixed lock body comprises a fixed lock body baffle, a fixed lock body shell and a baffle in a groove, the door handles comprise a handle shell, a handle and a swinging rocker, the middle part of the swinging rocker is movably arranged on the handle shell through a pin shaft, and one end of the swinging rocker is positioned in a toggle piece pushing groove of the lock tongue when the door mechanical mute lock is in a use state. The handle of the invention adopts the rocker to open and close the door, and the movement of the lock tongue is used for limiting the swinging angle of the rocker, and the rocker is not limited by the spring, so that the swinging can not generate noise; meanwhile, the spring bolt is automatically ejected by adopting a mode of stretching the baffle, and slowly moves under the buffer action of spring force after the spring bolt contacts with the baffle in the groove, so that loud sound is not generated, and the noise is reduced.

Description

Door mechanical mute lock

Technical Field

The invention relates to a lock body for a door, in particular to a mechanical mute lock for the door.

Background

In our daily life, the bedroom door has the highest frequency of use, and the bedroom door has certain sound insulation function after closing the door, so that the noise of the dining room and the living room is isolated. However, in a sleeping room with peaceful and peaceful rest space, noise generated by the door lock when the door is opened or closed greatly influences the daily life of people. Most door locks on the market have no silencing function and generate larger noise. The old and children have high requirements on sleeping environment, and the noise generation has larger influence on sleeping quality of the people.

The existing bedroom door mechanical lock body has the following defects in terms of structure and silence: 1. the traditional mechanical lock body spring bolt can give out instant impact sound when colliding with the door frame; 2. the spring bolt can generate larger noise after the traditional mechanical lock body is closed; 3. the collision of the bedroom door and the door frame can give out collision sound; 4. after the door handle is opened and closed, the rebound can give out impact sound under the action of spring force.

Disclosure of Invention

The invention aims to solve the technical problems that: the mechanical mute lock for the door has the advantages that the lock tongue of the lock body is not collided with the door frame, noise generated by collision of the lock tongue and the door frame is eliminated, the structure of the handle is improved, noise generated by resilience of the handle in the moment is reduced, and compared with the traditional mechanical lock body, noise generated when the door is opened and closed can be effectively reduced.

The technical scheme for solving the technical problems is as follows: the door mechanical mute lock comprises a movable lock body, a fixed lock body and two door handles, wherein the movable lock body comprises a movable lock body shell, a pressure spring I, a spring baffle, a lock tongue and a movable lock body baffle, a lock tongue mounting groove is formed in the upper part of the movable lock body shell, the spring baffle and the lock tongue are arranged in the lock tongue mounting groove, the lock tongue and the lock tongue mounting groove are in clearance fit, the pressure spring I is arranged between the spring baffle and the lock tongue, a toggle piece pushing groove is formed in one end of the lock tongue close to the pressure spring I, a toggle piece through groove communicated with the toggle piece pushing groove is formed in the lock tongue mounting groove, a guide limit groove is formed in the lock tongue, a boss matched with the guide limit groove is formed in the lock tongue mounting groove, the movable lock body baffle is connected with the movable lock body shell, a lock tongue extending through hole is formed in a corresponding position in the movable lock body baffle, a stretching baffle is arranged on the lock tongue extending through the stretching through hole, the stretching baffle is provided with a protruding edge, and no external force acts on the stretching baffle to shield part of the lock tongue;

The fixed lock body comprises a fixed lock body baffle, a fixed lock body shell and an in-groove baffle, wherein a layer of plastic is adhered to the end face, in contact with the lock tongue, of the in-groove baffle;

The door handle comprises a handle shell, a handle and a swing rocker, wherein the handle is arranged on the handle shell through a locking bolt, the middle part of the swing rocker is movably arranged on the handle shell through a pin shaft, and when the door handle is in a use state, one end of the swing rocker is positioned in a toggle piece pushing groove of a lock tongue, and a lock cylinder mounting groove is further formed in the handle shell.

The movable lock body is characterized in that the movable lock body further comprises a swing lock tongue, the lower part of the movable lock body shell is further provided with a reverse lock cylinder mounting groove and an arc groove, the swing lock tongue is movably mounted on the movable lock body shell through a pin, the pin is located in the arc groove, the bottom end of the swing lock tongue is provided with a lock swing groove for mounting a swing lock block on the reverse lock cylinder, the movable lock body baffle is provided with a swing lock tongue extending through hole at a corresponding position, the fixed lock body baffle is provided with a swing lock tongue extending through hole at a corresponding position, and the swing lock tongue extends into the through hole and the bottom surface in the swing lock tongue extending through hole is provided with plastic.

One end of the swing rocker is provided with a toggle head, and the other end of the swing rocker is provided with an inclined end convenient to toggle.

The clearance between the outer wall of the lock tongue and the inner wall of the lock tongue mounting groove is 0.1mm.

The invention mainly aims at the problem of large door opening and closing noise of the existing bedroom door mechanical lock body, and the door mechanical mute lock is designed, the handle of the door mechanical mute lock adopts a rocker to open and close the door, the swing angle of the rocker is limited by utilizing the movement of a lock tongue, and the rocker is not limited by a spring, so that the swing cannot generate noise; meanwhile, the spring bolt is automatically ejected by adopting a mode of stretching the baffle, and slowly moves under the buffer action of spring force after the spring bolt contacts with the baffle in the groove, so that loud sound is not generated, and the noise is reduced. The beneficial effects of the invention are as follows:

1. when the door is closed, the stretching baffle contacts with the door frame, and the buffering function is achieved under the action of the spring force, so that the door and the door frame can be effectively prevented from being impacted to generate larger impact sound.

2. After the spring bolt pops up and enters the lock hole of the fixed lock body baffle, the spring bolt plays a role in buffering under the reaction force of the baffle in the groove, and the instant popping sound of the spring bolt is greatly reduced.

3. The bolt adopts the embedded design, avoids the impact sound of AND gate when traditional bolt closing the door.

4. The special door handle is designed, the swinging rocker swings along with the movement of the lock tongue, and compared with a traditional handle, the instant striking sound generated by the rebound of the handle after the handle is opened and closed and the door is instantly released is reduced.

5. The overall structure design of the invention is similar to the shape and the size of the traditional lock, and the universality of the lock and the lock core installation is maintained.

The technical features of the door mechanical mute lock of the present invention will be further described with reference to the drawings and the embodiments.

Drawings

Fig. 1: the front view of the movable lock body of the present invention.

Fig. 2: A-A cross-sectional view of fig. 1.

Fig. 3: the right side view of the movable lock body of the present invention.

Fig. 4: fig. 3 is a sectional view of B-B.

Fig. 5: the left side view of the fixed lock body of the present invention.

Fig. 6: the front view of the fixed lock body of the present invention.

Fig. 7: FIG. 6 is a C-C cross-sectional view.

Fig. 8: the front view of the door handle of the present invention.

Fig. 9: the left side view of the door handle of the present invention.

Fig. 10: the door handle of the present invention is seen from above.

Fig. 11: the rear view of the door handle of the present invention.

Fig. 12: the invention relates to a position relation diagram (door opening state) of a swing rocker and a lock tongue in a use state.

Fig. 13: the invention relates to a position relation diagram (door closing state) of a swing rocker and a lock tongue in a use state.

Fig. 14: the present invention uses a state diagram (door closing state).

In the figure: 1-movable lock body shell, 101-lock tongue mounting groove, 102-swing lock tongue extending through hole, 103-back lock cylinder mounting groove, 104-boss, 105-toggle piece through groove, 2-pressure spring I, 3-spring baffle, 4-swing lock tongue, 5-pin, 6-arc groove, 7-lock tongue, 71-toggle piece push groove, 72-guide limit groove, 8-tension spring, 9-stretch baffle, 10-movable lock body baffle, 11-fixed lock body shell, 12-fixed screw I, 13-pressure spring II, 14-fixed lock body baffle, 141-swing lock tongue extending through hole, 15-in groove baffle, 16-fixed screw II, 17-handle shell, 171-lock cylinder mounting groove, 18-handle, 19-swing rocker, 20-locking bolt.

Detailed Description

Example 1: the utility model provides a door mechanical type silent lock, shown in fig. 1-11, including the movable lock body, fixed lock body and two door handles, the movable lock body includes movable lock body shell 1, compression spring I2, spring baffle 3, spring bolt 7 and movable lock body baffle 10, and the outer circle department of spring bolt front end is chamfered to be convenient for carry out the lockhole, the upper portion of movable lock body shell is provided with spring bolt mounting groove 101, and spring baffle and spring bolt are installed in the spring bolt mounting groove, and spring bolt mounting groove be clearance fit, and compression spring I installs between spring baffle and spring bolt, and open on the spring bolt mounting groove near compression spring I's spring bolt one end has toggle piece push slot 71, open on the spring bolt mounting groove has toggle piece push slot 105 with toggle piece push slot intercommunication, opens on the spring bolt has guide limit slot 72, be provided with on the spring bolt mounting groove with guide limit slot complex boss 104, the movable lock body baffle adopts inlaying or welded fixed connection with the movable lock body shell, the corresponding position on the movable lock body baffle has the spring bolt to stretch out the through-hole department on the movable lock body baffle, open has the spout on the spring bolt that stretches out the through-hole department, stretch out through spring baffle 8 in the spout, stretch out the spring baffle has the pull force 9 in the stretch out the baffle, stretch out the pull force 9 when the spring baffle has the stretch-out the pull 7 to have the pull force to stretch out the baffle to limit in the pull 7, and stretch out the pull force under the circumstances of the pull 7.

The fixed lock body comprises a fixed lock body baffle 14, a fixed lock body shell 11 and a groove inner baffle 15, wherein a layer of plastic is adhered to the end face, in contact with the lock tongue, of the groove inner baffle 15, the fixed lock body shell is of a hollow three-dimensional structure with an opening, the groove inner baffle is movably arranged in the fixed lock body shell, a pressure spring II 13 is arranged between the groove inner baffle and the fixed lock body shell, namely, two ends of the pressure spring II are fixedly connected onto the fixed lock body shell and the groove inner baffle through a fixing screw I12 and a fixing screw II 16 respectively, the axial displacement of the groove inner baffle 15 in the movable lock body shell 11 is limited by the pressure spring II 13, the fixed lock body baffle is connected with the fixed lock body shell, and the lock tongue stretches into a through hole at the corresponding position of the fixed lock body baffle.

The door handles are designed in a pair, one is arranged outside the door, the other is arranged in the door, the shape of the door handle on the inner side of the door is the same as that of the door handle on the outer side, and the installation directions are opposite. The door handle includes a handle housing 17, a handle 18 mounted to the handle housing by a lock bolt 20, and a swing rocker 19, the handle 18 being unable to swing along the center line of the lock bolt 20. The middle part of the swing rocker is movably arranged on the handle shell through a pin shaft, the swing rocker can swing circumferentially along the pin shaft, one end of the swing rocker is positioned in a poking piece pushing groove 71 of the lock tongue when the lock tongue is in a use state, a lock cylinder mounting groove 171 is also formed in the handle shell, and the lock cylinder mounting groove is consistent with the lock cylinder size of a bedroom door on the market.

In this embodiment, the movable lock body still includes swing spring bolt 4, the lower part of movable lock body shell still is provided with back lock core mounting groove 103 and circular arc groove 6, and swing spring bolt passes through pin 5 movable mounting on the movable lock body shell, and the pin is located the circular arc inslot, and the lock swing groove 41 that is used for installing the last swing locking piece of back lock core is seted up to the bottom of swing spring bolt, and swing spring bolt 4can do the swing of 90 degrees angles in circular arc groove 6 under the restriction of pin 5, and it stretches out through-hole 102 to open corresponding position on the movable lock body baffle, fixed lock body baffle corresponds the position and opens and stretch into through-hole 141 with swing spring bolt stretching out through-hole 102 inner bottom surface and be provided with the plastic. As an alternative, when the counter-locking function is not required, the corresponding counter-locking means may be omitted.

In this embodiment, one end of the swing rocker is provided with a toggle head 191, and the other end is provided with an inclined end convenient for toggling. As a transformation, the specific structure of the swing rocker can also be changed according to actual conditions, and the swing rocker is convenient for pulling the lock tongue to open the door.

In this embodiment, the clearance between the outer wall of the lock tongue and the inner wall of the lock tongue mounting groove is 0.1mm. As a transformation, the gap between the outer wall of the lock tongue and the inner wall of the lock tongue mounting groove can be determined according to actual conditions, and the lock tongue can be ensured to smoothly move in the lock tongue mounting groove.

The using process comprises the following steps: the movable lock body is installed in the lock hole of the door, and rivets or screws are put into the upper screw hole and the lower screw hole of the baffle plate 10 for fixing the movable lock body, and the movable lock body is fixed and screwed with the door. Then, the door handle is installed, as shown in fig. 12, the swing rocker 19 is placed in the bolt tail end poking piece pushing groove 71, and then the anti-lock core is placed; the anti-lock core swinging block is embedded into the lock swinging groove 41 on the swinging lock tongue 4, after the lock core is fixed, the front handle and the rear handle are connected by using the screw to fix the upper screw hole and the lower screw hole, and the lock core is fixed firmly (the panel installation of the outside door handle is the same as the step of the inside door handle).

The fixed lock body is arranged at the lock hole of the door frame, the position of the round hole on the fixed lock body baffle 14 is adjusted to be aligned with the hole on the movable lock body baffle 10, after the position is fixed, the fixed lock body baffle 14 is put into an upper screw hole and a lower screw hole of the fixed lock body baffle 14 by using screws, the fixed lock body is pre-screwed, the door is tried to be closed, the lock tongue 7 enters the round hole of the fixed lock body baffle 14, after the position of the fixed lock body is finely adjusted, the screws are fixed and screwed, and the installation of the mute lock of the whole mechanical bedroom door is completed.

When the door is closed, the stretching baffle 9 can contact the door frame firstly, and due to the inertia force, the stretching baffle 9 stretches outwards all the time (when the stretching baffle stretches to the limit, a small gap is reserved between the door and the door frame, no collision is generated between the door and the door frame, and collision is avoided), when the stretching bolt 7 is completely exposed, under the action of the pressure spring I2, the bolt 7 pops outwards instantly, and due to the design scheme that the front end of the bolt 7 adopts a chamfer angle, the bolt 7 can enter the round hole of the fixed lock body baffle 14 more easily. The lock tongue 7 enters the round hole of the fixed lock body baffle 14 to be contacted with the in-groove baffle 15, and as the outside of the in-groove baffle 15 is stuck with plastic, no loud sound can be generated due to instant impact. The force of the pressure spring I2 is larger than that of the pressure spring II 13, the lock tongue 7 continues to enter the lock hole, and the lock tongue 7 stops (the pressure spring II 13 plays a buffering role in the process that the lock tongue stretches out to close the door) until the guide limit groove 72 on the lock tongue 7 moves to the limit position, so that one door closing action is completed, as shown in fig. 13.

After the door is closed, if the back locking is needed, the knob at the tail part of the back locking lock cylinder is rotated, and the back locking lock cylinder and the swing bolt 4 are driven to rotate 90 degrees and then are positioned at the horizontal position, as shown in fig. 14, the swing bolt 4 enters a rectangular lock hole (namely, the swing bolt stretches into the through hole 141) at the lower end of the fixed lock body baffle 14, plastic is placed at the bottom of the lock hole, the moment that the swing bolt 4 rotates is prevented from generating impact with the lock hole to make sound, and the back locking function is realized at the moment. Unlocking the back lock, only the key is put into the lock core knob to drive the lock core swinging block to rotate, and the whole swinging lock tongue 4 is driven to rotate to the vertical direction, so that unlocking operation is completed.

When the door is opened, the swing rocker 19 is shifted by hand, so that the lock tongue moves towards the lock tongue mounting groove 101, when the lock tongue 7 completely enters the movable lock body baffle 10, the door can be opened, and meanwhile, the stretching baffle 9 moves back under the action of a spring force and blocks the lock tongue 7, and the lock tongue 7 is fixed in place, so that the door opening action is completed once.

Claims

1. A door mechanical mute lock is characterized in that: the movable lock body comprises a movable lock body shell (1), a pressure spring I (2), a spring baffle (3), a lock tongue (7) and a movable lock body baffle (10), wherein a lock tongue mounting groove (101) is formed in the upper portion of the movable lock body shell, the spring baffle and the lock tongue are mounted in the lock tongue mounting groove, the lock tongue and the lock tongue mounting groove are in clearance fit, the pressure spring I is mounted between the spring baffle and the lock tongue, a toggle piece pushing groove (71) is formed in one end of the lock tongue close to the pressure spring I, a toggle piece through groove (105) communicated with the toggle piece pushing groove is formed in the lock tongue mounting groove, a guide limit groove (72) is formed in the lock tongue, a boss (104) matched with the guide limit groove is formed in the lock tongue mounting groove, the movable lock body baffle is connected with the movable lock body shell, a lock tongue extending through hole is formed in a corresponding position on the movable lock body baffle, a stretching baffle (9) is mounted on the stretching baffle through a tension spring (8), and the stretching baffle has a protruding edge (91), and when no external force acts, the stretching baffle stretches out of the lock tongue partially.

The fixed lock body comprises a fixed lock body baffle (14), a fixed lock body shell (11) and a groove inner baffle (15), wherein a layer of plastic is adhered to the end face of the groove inner baffle (15) contacted with the lock tongue, the fixed lock body shell is of a hollow three-dimensional structure with an opening, the groove inner baffle is movably arranged in the fixed lock body shell, a pressure spring II (13) is arranged between the groove inner baffle and the fixed lock body shell, the fixed lock body baffle is connected with the fixed lock body shell, and the lock tongue extending into a through hole is formed in the corresponding position of the fixed lock body baffle;

The door handle comprises a handle shell (17), a handle (18) and a swing rocker (19), wherein the handle is arranged on the handle shell through a locking bolt (20), the middle part of the swing rocker is movably arranged on the handle shell through a pin shaft, and when the door handle is in a use state, one end of the swing rocker is positioned in a toggle piece pushing groove (71) of a lock tongue, and a lock cylinder mounting groove (171) is further formed in the handle shell.

2. The door mechanical mute lock of claim 1, wherein: the movable lock body is characterized by further comprising a swing lock tongue (4), wherein the lower part of the movable lock body shell is further provided with a reverse lock cylinder mounting groove (103) and an arc groove (6), the swing lock tongue is movably mounted on the movable lock body shell through a pin (5), the pin is positioned in the arc groove, the bottom end of the swing lock tongue is provided with a lock swing groove (41) for mounting a swing lock block on the reverse lock cylinder, the movable lock body baffle is provided with a swing lock tongue extending through hole (102) at a corresponding position, the fixed lock body baffle is provided with a swing lock tongue extending through hole (141) at a corresponding position, and the inner bottom surfaces of the swing lock tongue extending through hole (141) and the swing lock tongue extending through hole (102) are provided with plastics.

3. A door mechanical mute lock as claimed in claim 1 or 2, characterised in that: one end of the swing rocker is provided with a toggle head (191), and the other end of the swing rocker is provided with an inclined end convenient to toggle.

4. A door mechanical mute lock as claimed in claim 1 or 2, characterised in that: the clearance between the outer wall of the lock tongue and the inner wall of the lock tongue mounting groove is 0.1mm.