CN216588100U - Mute lock body - Google Patents

Abstract

The utility model discloses a silent lock body, which comprises a lock body shell; a latch bolt slidably installed in the lock body case, one end of the latch bolt being exposed to the lock body case; the first shifting fork is rotatably arranged in the lock body shell and provided with a first shifting strip and a second shifting strip, and the first shifting strip is used for driving the latch bolt to slide; a damper mounted in the lock body housing; the middle part of the linkage arm is rotationally connected with the lock body shell, the linkage arm comprises a force application section and a pressed section, one end of the pressed section is connected with the output end of the buffer, and one end of the force application section is matched with the second shifting strip. According to the utility model, the buffer is arranged in the lock body, so that the buffer effect can be realized by the buffer no matter the handle is one-sided or two-sided, and a plurality of sets of buffer mechanisms are not required to be arranged according to the number of the handles; and the lever structure through first shift fork can relax the restriction to the buffer specification to can choose for use the buffer of bigger specification, promote the feeling of switch lock. The utility model relates to the technical field of lock bodies.

Description

Mute lock body

Technical Field

The utility model relates to a mute lock body in the technical field of lock bodies.

Background

The door lock is used as a mechanism for controlling opening and closing of the door, and is frequently used when the door is opened and closed. The conventional door lock generally includes a lock body and a handle, and when a user presses or lifts the handle, a bolt in the lock body is controlled to extend or retract, and then the handle is reset through a return mechanism inside the lock body. During the resetting process, the lock body is easy to generate impact sound due to excessive restoring force, and the handle may even impact the hand of the user.

To solve this problem, some door locks have been built in with a damper mechanism. However, most of the buffer mechanisms are arranged inside the handles, so that only one side handle of the door locks has a buffer effect, and if both side handles are required to have the buffer effect, two sets of buffer mechanisms are required to respectively correspond to the two side handles, and the cost is too high.

In addition, because the lock body has a compact structure, the specification selection of the buffer is limited, and only the buffer with shorter stroke can be selected. The shorter the buffer stroke is, the poorer the buffering effect is, the poorer the hand feeling when the handle is pressed is, and the use experience of a user is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the technical problems in the prior art, and provides a silent lock body which can reduce the number of buffer mechanisms and improve the buffer effect.

According to an embodiment of the present invention, there is provided a silent lock body, including

A lock body housing;

a latch bolt slidably mounted in the lock body case, one end of the latch bolt being exposed to the lock body case;

the first shifting fork is rotatably arranged in the lock body shell and provided with a first shifting strip and a second shifting strip, and the first shifting strip is used for driving the latch bolt to slide;

a damper mounted in the lock body housing;

the middle part of the linkage arm is rotationally connected with the lock body shell, the linkage arm comprises a force application section and a pressed section, one end of the pressed section is connected with the output end of the buffer, and one end of the force application section is matched with the second shifting strip;

the first shifting fork is rotated, the first shifting strip is linked with the latch bolt to slide, and the second shifting strip is linked with the output end of the buffer to perform telescopic movement.

According to the embodiment of the present invention, the silent lock body further includes an elastic member, two ends of the elastic member are respectively connected to the latch bolt and the lock body housing, and the elastic member is configured to drive the latch bolt to be exposed from the lock body housing.

According to an embodiment of the present invention, further, one end of the damper is hinged to the lock body case.

According to the embodiment of the utility model, further, the rotary connection position of the linkage arm and the lock body shell is a boundary point, the force application section and the pressure receiving section are respectively positioned at two sides of the boundary point, and the length of the force application section is longer than that of the pressure receiving section.

According to an embodiment of the present invention, further, an angle between the force application section and the pressure receiving section is less than 180 °.

According to the embodiment of the utility model, furthermore, one end of the force application section is of a C-shaped structure, and the second poking strip is arranged in the opening of the C-shaped structure.

According to the embodiment of the utility model, the mute lock body further comprises a square tongue and a lock cylinder rotating block, the square tongue is connected to the lock body shell in a sliding mode, one end of the square tongue can be exposed out of the lock body shell, the square tongue is provided with a stroke gap, the lock cylinder rotating block is connected to the lock body shell in a rotating mode, the lock cylinder rotating block is provided with a third shifting strip, and the third shifting strip can drive the square tongue to slide and is matched with the stroke gap.

According to the embodiment of the utility model, the silent lock body further comprises a second shifting fork and a linkage push sheet, the second shifting fork is rotationally connected to the lock body shell, the second shifting fork is provided with a fourth shifting bar and a fifth shifting bar, the fourth shifting bar is used for driving the latch bolt to slide, one end of the linkage push sheet is abutted against the fifth shifting bar, and the other end of the linkage push sheet can be contacted with the third shifting bar.

According to the embodiment of the utility model, further, the first shifting fork and the second shifting fork are coaxially arranged.

According to the embodiment of the utility model, the silent lock body further comprises a torsion spring and a rotating shaft, the rotating shaft is provided with a linkage end, a movable end, a clamping groove and a square hole, the linkage end is prism-shaped and can be linked with the first shifting fork, the movable end and the second shifting fork are movably sleeved and connected relatively, two ends of the torsion spring are respectively connected to the lock body shell and the clamping groove, and the square hole is used for being connected with a handle.

The embodiment of the utility model has the beneficial effects that: according to the utility model, the buffer is arranged in the lock body, so that the buffer effect can be realized by the buffer no matter the handle is one-sided or two-sided, and a plurality of sets of buffer mechanisms are not required to be arranged according to the number of the handles; and the lever structure through first shift fork can relax the restriction to the buffer specification to can choose for use the buffer of bigger specification, promote the feeling of switch lock.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a schematic view of an embodiment of the present invention with the latch tongue extended;

FIG. 4 is a schematic view of an embodiment of the present invention with the latch bolt retracted;

FIG. 5 is a three-dimensional view of the lingual portion in an embodiment of the utility model;

fig. 6 is a three-dimensional view of a rotating shaft in an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 2, the mute lock body in the embodiment of the present invention includes a lock body housing 1, a latch bolt 2, a first shift fork 3, a linkage arm 4, and a buffer 5. The lock body shell 1 serves as a structural frame of the mute lock body and also plays a role in protecting internal parts of the mute lock body, and a part of the shell of the lock body shell 1 is hidden in the attached drawings so as to show the technical key points of the mute lock body. The first shifting fork 3 is used as a driving piece which is linked with the handle and is rotationally connected in the lock body shell 1, and the first shifting fork 3 is provided with a first shifting bar 31 and a second shifting bar 32. The latch bolt 2 is slidably connected in the lock body shell 1, and one end of the latch bolt can be exposed out of the lock body shell 1 so as to be abutted against a lock hole matched with the latch bolt, thereby realizing the door locking effect. The other end of the latch bolt 2 is driven by the first poking strip 31 to realize the sliding of the latch bolt 2, in some embodiments, a groove is arranged on the latch bolt 2, and the first poking strip 31 is matched with the groove, so that the first poking strip 31 can drive the latch bolt 2 to realize the sliding through the groove; in this embodiment, the other end of the latch bolt 2 is provided with a limiting block, and the first shifting strip 31 abuts against the limiting block 21, so that when the first shifting fork 3 rotates, the first shifting strip 31 can drive the latch bolt 2 to retract.

The linkage arm 4 is used as a transmission structure between the first shifting fork 3 and the buffer 5 and is provided with a junction point 41, a force application section 42 and a pressure receiving section 43. The boundary point 41 is located at the boundary of the force application section 42 and the pressure receiving section 43, and the linkage arm 4 is rotatably connected with the lock body shell 1 at the boundary point 41, so that the boundary point 41 not only serves as the installation position of the linkage arm 4, but also serves as a fulcrum when the linkage arm 4 is stressed, and a lever mechanism is formed.

One end of the force application section 42 is adapted to the second shifting fork 32, and in some embodiments, one end of the force application section 42 is hinged to the second shifting fork 32, so as to realize the linkage of the linkage arm 4 and the first shifting fork 3. In this embodiment, one end of the force application section 42 is a "C" shaped structure, and the second toggle bar 32 is disposed in the opening of the "C" shaped structure, so that the second toggle bar 32 and the force application section 42 are driven in a manner similar to gear engagement, and the transmission efficiency is higher, and the structure is simple.

One end of the pressed section 43 is hinged with an output end in the buffer 5, thereby realizing linkage of the buffer 5 and the first shift fork 3.

Through setting up buffer 5 in lock body shell 1, buffer gear no longer need add according to handle quantity, saves the cost. And through the switching-over of linkage arm 4, setting up of buffer 5 is more free, can utilize the lock body space better to select for use buffer 5 of bigger specification, promote buffering effect.

Furthermore, the mute lock body further comprises an elastic piece 6, wherein two ends of the elastic piece 6 are respectively connected to the latch bolt 2 and the lock body shell 1, and the elastic piece is in a compressed state and is used for driving the latch bolt 2 to be exposed out of the lock body shell 1. Specifically, the elastic member 6 is a spring by which the latch bolt 2 is maintained in an exposed state, and the latch bolt 2 is pulled back when the first fork 3 is rotated clockwise.

Further, one end of the damper 5 is hinged to the lock body case 1, so that the damper 5 can swing inside the lock body case 1 to accommodate a force offset generated when the linkage arm 4 swings.

Further, the length of the force application section 42 is longer than that of the pressure receiving section 43, so that the force required to be applied to the force application section 42 is smaller by the principle of leverage. This is because when a larger size bumper 5 is selected, the force required to reset it will also need to be greater, and the restoring force requirement can be reduced by increasing the moment arm of the force applying section 42.

Furthermore, the included angle between the force application section 42 and the pressed section 43 is less than 180 degrees, so that the linkage arm 4 is in a V shape and used for adjusting the position of the buffer 5 to enable the buffer to be arranged close to one side of the lock body shell 1, and interference on other parts in the lock body can not be caused.

Referring to fig. 3, when the lock body is in a locked state, the elastic member 6 drives the latch bolt 2 to be exposed to the outside of the lock body case 1, and the buffer 5 is also in a compressed state. Referring to fig. 4, when the handle drives the first fork 3 to rotate clockwise, on the one hand, the first shift bar 31 on the first fork 3 drives the latch bolt 2 to retract, and the elastic member 6 is further compressed; on the other hand, the second shifting strip 32 on the first shifting fork 3 drives the linkage arm 4 to swing, so that the piston in the buffer 5 is driven to pull outwards, the buffer 5 plays a role in buffering in the whole process, and noise caused by overlarge force of pressing down the handle is prevented. When the external force on the handle is removed, the elastic piece 6 drives the latch bolt 2 to reset and drives the first shifting fork 3, the linkage arm 4 and the buffer 5 to reset, and the buffer 5 also plays a role in buffering, so that noise is prevented from being caused in the resetting process, and a silencing effect is achieved.

Referring to fig. 5, further, the mute lock body further includes a square tongue 7 and a lock cylinder turning block 8, the square tongue 7 is connected in the lock body housing 1 in a sliding manner, one end of the square tongue 7 can be exposed out of the lock body housing 1, and the lock body also plays a role in opening and closing the lock like the latch tongue 2. One side of the square tongue 7 is provided with a stroke gap 71 which is used for linking with the lock core rotating block 8. The lock core rotating block 8 is rotatably connected in the lock body shell 1 and is driven by the lock core. When the matched key is inserted into the lock cylinder and rotates, the lock cylinder rotating block 8 can be driven to rotate, and then the third poking strip 81 on the lock cylinder rotating block 8 can rotate into the stroke gap 71 and drive the square bolt 7 to extend or retract, and meanwhile, the square bolt 7 can also be positioned.

Further, the mute lock body further comprises a second shifting fork 9 and a linkage pushing sheet 10, the second shifting fork 9 is rotatably connected in the lock body shell 1, the second shifting fork 9 is provided with a fourth shifting strip 91 and a fifth shifting strip 92, the fourth shifting strip 91 is used for driving the latch bolt 2 to slide, and the fourth shifting strip 91 is abutted to a limiting block on the latch bolt 2. The linkage push piece 10 is slidably connected to the square tongue 7, one end of the linkage push piece is abutted against the fifth toggle strip 92, and the other end of the linkage push piece can be contacted with the third toggle strip 81. When the lock core rotating block 8 rotates clockwise, the third shifting bar 81 on the lock core rotating block pushes the linkage push sheet 10, and then the fifth shifting bar 92 drives the second shifting fork 9 to rotate clockwise, and the latch bolt 2 retracts. So that the extension or retraction of the latch tongue 2 by the key cylinder can be controlled.

Further, the first fork 3 and the second fork 9 are coaxially arranged, thereby simplifying the structure and saving the inner space of the lock body.

Further, the mute lock body also comprises a torsion spring 11 and a rotating shaft 12. Referring to fig. 6, the shaft 12 is provided with a coupling end 121, a movable end 122, a locking groove 123 and a square hole 124. Wherein the linkage end 121 is prism-shaped, and the first shifting fork 3 is provided with a polygonal mounting hole, and the two can be mounted in a matching manner, so that the first shifting fork 3 can rotate along with the rotation of the rotating shaft 12. The movable end 122 is cylindrical, the second shifting fork 9 is provided with a circular mounting hole, the second shifting fork 9 can be sleeved outside the movable end 122, and the second shifting fork 9 cannot rotate along with the rotation shaft 12 when the rotation shaft rotates. The square hole 124 penetrates through the rotating shaft 12 for mounting a handle. The two ends of the torsion spring 11 are respectively connected to the lock body shell 1 and the clamping groove 123, and the function of a reset handle is achieved.

When the user passes through handle control latch bolt 2 and withdraws, the user pushes down the handle, and pivot 12 rotates, and 11 energy storage of torsional spring, linkage end 121 drive first shift fork 3 clockwise rotation, and the first strip 31 drive latch bolt 2 withdrawal on the first shift fork 3 is unblanked and is accomplished. When the lock is to be closed, a user loosens the handle, the torsion spring 11 releases elastic energy and drives the rotating shaft 12 to rotate, the first shifting fork 3 rotates anticlockwise, the latch bolt 2 extends out, and the lock closing is completed.

When a user controls the latch bolt 2 to retract through the lock cylinder, the user rotates the lock cylinder rotating block 8 clockwise through the lock cylinder, the third shifting bar 81 on the lock cylinder rotating block 8 drives the second shifting fork 9 to rotate clockwise through the linkage pushing piece 10, at the moment, the second shifting fork 9 rotates relative to the movable end 122 on the rotating shaft 12, the rotating shaft 12 is not driven, the fourth shifting bar 91 on the second shifting fork 9 drives the latch bolt 2 to retract, and unlocking is completed. When the lock is to be closed, a user rotates the lock core rotating block 8 anticlockwise through the lock core, the third shifting strip 81 on the lock core rotating block 8 is separated from contact with the linkage pushing sheet 10, meanwhile, the latch bolt 2 extends out due to the fact that the elastic piece 6 releases elastic energy, the second shifting fork 9 rotates anticlockwise and finally resets, and the lock closing is completed.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims (10)

1. A silent lock body, comprising:

a lock body housing (1);

a latch tongue (2) slidably mounted in the lock body case (1), one end of which can be exposed to the lock body case (1);

the first shifting fork (3) is rotatably arranged in the lock body shell (1), the first shifting fork (3) is provided with a first shifting strip (31) and a second shifting strip (32), and the first shifting strip (31) is used for driving the latch bolt (2) to slide;

a damper (5) mounted in the lock body housing (1);

the middle of the linkage arm (4) is rotatably connected with the lock body shell (1), the linkage arm (4) comprises a force application section (42) and a pressure bearing section (43), one end of the pressure bearing section (43) is connected with the output end of the buffer (5), and one end of the force application section (42) is matched with the second shifting strip (32);

the first shifting fork (3) is rotated, the first shifting strip (31) is linked with the latch bolt (2) to slide, and the second shifting strip (32) is linked with the output end of the buffer (5) to stretch and retract.

2. A silent lock body as claimed in claim 1, wherein: the mute lock body further comprises an elastic piece (6), two ends of the elastic piece (6) are respectively connected to the latch bolt (2) and the lock body shell (1), and the elastic piece (6) is used for driving the latch bolt (2) to be exposed out of the lock body shell (1).

3. A silent lock body as claimed in claim 1, wherein: one end of the buffer (5) is hinged with the lock body shell (1).

4. A silent lock body as claimed in claim 1, wherein: the rotary connection part of the linkage arm (4) and the lock body shell (1) is a boundary point (41), the force application section (42) and the pressure bearing section (43) are respectively positioned at two sides of the boundary point (41), and the length of the force application section (42) is longer than that of the pressure bearing section (43).

5. A silent lock body as claimed in claim 4, wherein: the included angle between the force application section (42) and the pressure bearing section (43) is less than 180 degrees.

6. A silent lock body as claimed in claim 1, wherein: one end of the force application section (42) is of a C-shaped structure, and the second poking strip (32) is arranged in an opening of the C-shaped structure.

7. A silent lock body as claimed in claim 1, wherein: the mute lock body further comprises a square bolt (7) and a lock cylinder rotating block (8), wherein the square bolt (7) is connected to the lock body shell (1) in a sliding mode, one end of the square bolt (7) can be exposed out of the lock body shell (1), the square bolt (7) is provided with a stroke gap (71), the lock cylinder rotating block (8) is connected to the lock body shell (1) in a rotating mode, the lock cylinder rotating block (8) is provided with a third poking strip (81), and the third poking strip (81) can drive the square bolt (7) to slide and is matched with the stroke gap (71).

8. A silent lock body as claimed in claim 7, wherein: mute lock body still includes second shift fork (9) and linkage ejector pad (10), second shift fork (9) rotate connect in lock body shell (1), second shift fork (9) are equipped with fourth group strip (91) and fifth group strip (92), fourth group strip (91) are used for the drive latch bolt (2) slide, the one end of linkage ejector pad (10) with fifth group strip (92) butt, the other end of linkage ejector pad (10) can with third group strip (81) contact.

9. A silent lock body as claimed in claim 8, wherein: the first shifting fork (3) and the second shifting fork (9) are coaxially arranged.

10. A silent lock body as claimed in claim 9, wherein: the silence lock body still includes torsional spring (11) and pivot (12), pivot (12) are equipped with linkage end (121), expansion end (122), draw-in groove (123) and square hole (124), linkage end (121) be the prismatic and can with first shift fork (3) linkage, expansion end (122) with second shift fork (9) are established the connection with moving about relatively, the both ends of torsional spring (11) are connected to respectively lock body shell (1) with draw-in groove (123), square hole (124) are used for being connected with the handle.

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