CN111101757A - Push-pull module of push-pull lock - Google Patents

Abstract

The invention discloses a push-pull module of a push-pull lock, which can flexibly support any one of left push, left pull, right push and right pull of an opening and closing fan through detachable assembly and has universality for different arrangement modes of the opening and closing fan directions.

Description

Push-pull module of push-pull lock

Technical Field

The invention relates to a lock technology, in particular to a push-pull module of a push-pull lock.

Background

The opening and closing fan directions of the door or the window have different arrangement modes, and the pushing from the left side of the opening and closing fan, the pulling from the left side of the opening and closing fan, the pushing from the right side of the opening and closing fan and the pulling from the right side of the opening and closing fan are realized.

The push-pull mechanism of the existing push-pull lock can only support one of the push-pull mechanisms alternatively for different arrangements of the direction of opening and closing the sash. That is, the push-pull mechanism of the existing push-pull station needs to be equipped with corresponding models according to different arrangement modes of the opening and closing fan directions, and each model can only support a single opening and closing fan direction.

From the perspective of the user, before installing the push-pull lock, the type must be selected according to the direction of the opening and closing fan, and once the type is selected incorrectly, the situation of repeatedly assembling and disassembling the push-pull lock occurs, so that the user experience is poor. Moreover, from the perspective of the manufacturer, the manufacture of push-pull locks requires the simultaneous provision of different models of product, which also increases manufacturing and inventory costs.

Disclosure of Invention

An embodiment of the present invention provides a push-pull module of a push-pull lock, including:

a bottom case;

the pull rod is arranged on the bottom box in a push-and-pull manner;

a drive shaft rotatably mounted to the bottom case;

a cover plate covering the bottom case and exposing the driving shaft;

wherein a push-pull stroke of the draw bar is associated by a detachable fitting to one of two rotational directions of the drive shaft;

and, the offset direction of the push-pull stroke of the tie rod is constrained by the detachable fitting to one of the push-in and pull-out directions of the tie rod.

Optionally, the bottom case has a push-pull opening through which the pull rod passes.

Optionally, the pull rod is provided with an inner limiting bulge and an outer limiting bulge which are bulged in the width direction of the push-pull opening, wherein the inner limiting bulge forms limiting interference on the inner side of the bottom box, and the outer limiting bulge forms limiting interference on the outer side of the bottom box.

Optionally, the bottom case has a rotation shaft mounting post, and the driving shaft is rotatably inserted into the rotation shaft mounting post.

Optionally, further comprising: a first slider slidably mounted to the bottom case at one side of the driving shaft; a second slider slidably mounted to the bottom case at the other side of the driving shaft; wherein the first slider and the second slider are interlocked with the driving shaft in opposite directions to each other, and the pull rod is detachably and fixedly connected with one of the first slider and the second slider.

Optionally, the cover plate has a first guide groove parallel to the first slide groove at a position corresponding to the first slider and a second guide groove parallel to the second slide groove at a position corresponding to the second slider, and one of the first slider and the second slider and the pull rod are further slidably engaged with a corresponding one of the first guide groove and the second guide groove.

Optionally, the device further comprises a shifting piece, the shifting piece is arranged between the first sliding block and the second sliding block in the bottom box in a swinging mode, and two ends of the shifting piece are respectively in rotating connection with the first sliding block and the second sliding block.

Optionally, the bottom case has a shifting piece mounting post, a central hole of the shifting piece penetrates through the shifting piece mounting post, and the clamping grooves at two ends of the shifting piece are respectively and rotatably clamped in the interconnecting clamping posts of the first sliding block and the second sliding block.

Optionally, the bottom case has mounting bosses respectively arranged in pairs along the sliding directions of the first slider and the second slider, the first slider and the second slider respectively have bending limiting portions which limit movement between a pair of the mounting bosses on the corresponding sides, and the cover plate is fixed to the bottom case by screws screwed to the mounting bosses.

Optionally, a toothed disc is provided below the chassis of the driving shaft, and the first and second sliders respectively have racks engaged with the toothed disc.

Optionally, the inner end of the pull rod extending into the bottom box is provided with a cross connecting rod spanning between the first sliding block and the second sliding block, and one of the first sliding block and the second sliding block is detachably and fixedly connected with the corresponding end of the cross connecting rod.

Optionally, the transverse link has limit connection holes corresponding to the first sliding groove and the second sliding groove respectively, one of the first sliding groove and the second sliding groove is detachably and slidably matched with the pull rod through a push-pull limit post accommodated in a corresponding one of the limit connection holes, and the push-pull limit post is fixed in a corresponding one of the limit connection holes through a screw.

Optionally, the first slider and the second slider are respectively provided with a screwing hole, two ends of the transverse link are respectively provided with a hinge hole, and the screwing hole of one of the first slider and the second slider is connected with the hinge hole of the corresponding end of the transverse link through a screw.

Optionally, the cover plate has a first guide groove parallel to the first slide groove at a position corresponding to the first slider and a second guide groove parallel to the second slide groove at a position corresponding to the second slider, and the screw is further slidably engaged with a corresponding one of the first guide groove and the second guide groove.

Optionally, the cover plate has a first runner and a second runner that are oppositely offset parallel to a push-pull direction of the pull rod, and the pull rod is detachably slidably engaged with one of the first runner and the second runner.

Optionally, the locking device further comprises a movable clamping block, the movable clamping block is slidably mounted on the cover plate, and the movable clamping block has a degree of freedom of sliding between a locking position for locking the driving shaft and an unlocking position for releasing the driving shaft.

Optionally, the cover plate has a shaft hole for the upper main body of the driving shaft to pass through, the upper main body is provided with a rectangular rod hole, and the periphery of the upper main body is provided with a locking groove matched with the locking lug of the movable clamping block.

Optionally, the bottom case has a fixture block limiting protrusion, the movable fixture block has a limiting clamping groove engaged with the fixture block limiting protrusion when located at the locking position, and the movable fixture block is further connected with an elastic component, and the elastic component generates an elastic force to the movable fixture block to move to the locking position.

Optionally, the movable clamping block is further provided with a rotary locking column, the rotary locking column is in transmission connection with a transmission connecting column extending out of the bottom box, the rotary locking column has a degree of freedom for driving a peripheral locking lug to rotate, the locking lug in a locking phase extrudes the movable clamping block at a locking position, and the locking lug in an unlocking phase releases the extrusion on the movable clamping block.

Optionally, the rotary lock cylinder is in transmission connection with the transmission connection column through a transmission gear shaft and a transmission rack arranged in the bottom box.

As can be seen from the above, according to the push-pull module of the above embodiment, the push-pull stroke of the drawbar can be alternatively associated to either one of the two rotational directions of the drive shaft by the detachable fitting, and the offset direction of the push-pull stroke of the drawbar can be alternatively restricted to either one of the push-in and pull-out directions by the detachable fitting.

The rotation direction of the driving shaft can be selected through detachable connection, the expansion and contraction of the lock tongue on different sides of the opening and closing sash of the door and window can be adapted, and the different phase directions of the opening and closing sash of the door and window can be adapted through detachable matching and the offset selection of the push-pull stroke of the pull rod in the push-pull direction.

Therefore, the push-pull module can flexibly support any one of left push, left pull, right push and right pull of the opening and closing fan through detachable assembly, and has universality for different arrangement modes of the opening and closing fan directions. Therefore, not only can the user selection be avoided to improve the user experience, but also the manufacturing cost and the inventory cost can be avoided to be increased due to multi-model products.

Drawings

Figure 1 is a schematic view of an assembled structure of a push-pull module according to an embodiment of the present invention;

FIG. 2 is an exploded view of a push-pull module in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a chassis of the push-pull module shown in FIG. 2;

figure 4 is a schematic view of the structure of the drawbar of the push-pull module shown in figure 2;

FIG. 5 is a schematic view of the structure of the drawbar of the push-pull module shown in FIG. 2;

FIGS. 6a and 6b are schematic structural views of a first slider and a second slider, respectively, of the push-pull module shown in FIG. 2;

FIG. 7 is a schematic structural view of a paddle of the push-pull module shown in FIG. 2;

FIG. 8 is a schematic view of the structure of the cover plate of the push-pull module shown in FIG. 2;

figure 9 is a schematic diagram of the linkage of the push-pull modules in one embodiment of the present invention;

FIG. 10 is a schematic view of a first linkage mode based on the linkage principle shown in FIG. 9;

FIG. 11 is a schematic view of a second linkage mode based on the linkage principle shown in FIG. 9;

FIG. 12 is a schematic view of a third linkage mode based on the linkage principle shown in FIG. 9;

FIG. 13 is a schematic view of a fourth linkage mode based on the linkage principle shown in FIG. 9;

figures 14a and 14b are partial structural schematic views of an additional lock linkage of the push-pull module shown in figure 2; figure 15 is a schematic view of the locking principle of the additional linkage of the push-pull module in one embodiment of the invention.

Description of the reference numerals

10 bottom box

11 push-pull opening

12 mounting table

13 rotating shaft mounting column

14 mounting boss

15 plectrum erection column

16-fixture block limiting bulge

17 column groove

18 slide block barrier strip

19 rack bar

20 draw bar

21 inner limit bulge

22 external limit bulge

23 horizontal connecting rod

24a first reversing hinge hole

24b second reversing hinge hole

25a first limiting connection hole

25b second Limit attachment hole

26 limiting groove

261 wide groove section

262 narrow groove section

27 rectangular connecting hole

30 drive shaft

31 chassis

32 fluted disc

33 upper body

34 rectangular rod hole

35 locking groove

40a first slide

41a first interconnecting clip

42a first screw hole

43a first rack

44a first bending limiting part

40b second slider

41b second interconnect clip

42b second screw hole

43b second rack

44b second bending limiting part

50 cover plate

51a first chute

51b second chute

52a first guide groove

52b second guide groove

53 axle hole

54 mounting hole

55 fitting hole

56 avoidance port

57 screw hole

58 lock cylinder hole

60 plectrum

61 center hole

62a first card slot

62b second card slot

70 movable clamping block

700 torsion spring

71 locking tab

72-chute avoiding window

73 shaft hole avoiding window

75 torsional spring clip

76 limiting clamping groove

77 match with the long hole

81 rotating lock cylinder

811 locking lug

812 phase change driving lug

82 transmission gear shaft

821 transmission gear

822 phase-changing driving groove

83 drive rack

831 vertical tooth part

832 flat tooth part

84 transmission connecting column

841 outer shaft end

842 internal toothed disc

91 cover plate mounting screw

92 reversing mounting screw

93 push-and-pull limiting column

94 push-pull limiting screw

95 fixture block mounting screw

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

Figure 1 is a schematic view of the assembly structure of a push-pull module according to an embodiment of the present invention. Figure 2 is an exploded view of the push-pull module in one embodiment of the present invention.

Referring to fig. 1 and 2, in one embodiment, the push-pull mechanism of the push-pull lock may include a bottom case 10, a pull rod 20, a driving shaft 30, a first slider 40a, a second slider 40b, a cover plate 50, a pull tab 60, a movable latch 70, a rotary lock cylinder 81, a transmission gear shaft 82, a transmission rack 83, and a transmission connection cylinder 84.

Wherein, the draw bar 20 is installed on the bottom case 10 in a push-pull way, the driving shaft 30 is installed on the bottom case 10 in a rotatable way, the first slider 40a and the second slider 40b are respectively installed on the bottom case 10 in a slidable way on the two opposite sides of the driving shaft 30, the cover plate 50 covers the bottom case 10 and exposes the driving shaft 30, the plectrum 60 is installed on the bottom case 10 in a swingable way between the first slider 40a and the second slider 40b, the movable fixture block 70 is installed on the cover plate 50 in a sliding way, and the rotary lock column 81 is in transmission connection with the transmission connection column 84 which is partially exposed outside the bottom case 10 through the transmission gear shaft 82 and the transmission rack 83 which are arranged in the.

Figure 3 is a schematic structural view of the back box of the push-pull module shown in figure 2. Figure 4 is a schematic view of the structure of the drawbar of the push-pull module shown in figure 2. Figure 5 is a schematic view of the structure of the drawbar of the push-pull module shown in figure 2. Fig. 6a and 6b are schematic structural views of a first slider and a second slider, respectively, of the push-pull module shown in fig. 2. Fig. 7 is a schematic structural view of a paddle of the push-pull module shown in fig. 2. Figure 8 is a schematic view of the structure of the cover plate of the push-pull module shown in figure 2.

Referring to fig. 1 and 2 with further attention to fig. 3, the bottom case 10 is in the form of a generally rectangular hollow shell with an open top, and the bottom case 10 has three mounting platforms 12 distributed in a triangular pattern for mounting and fixing the bottom case 10 to other external structures. In addition, as can be seen from fig. 2 and 3:

the end wall of one end of the bottom case 10 in the length direction thereof has a push-pull opening 11 for the pull rod 20 to pass through so as to allow the pull rod 20 to move in a push-pull manner parallel to the length direction of the bottom case 10; the bottom case 10 is further provided with a column groove 17 for installing a transmission connecting column 84 at one side of the push-pull opening 11, and a rack bar 19 is arranged at the inner side of the end wall of the bottom case 10 at the end to form an accommodating space for accommodating a transmission rack 83;

the bottom case 10 has a rotary shaft mounting post 13 at the inner side of the end wall at the other end in the length direction thereof for rotatably mounting a drive shaft 30; the end wall at the other end of the bottom case 10 is also provided with a block limiting bulge 16 for matching with the movable block 70;

the inner sides of the side walls of both sides of the bottom case 10 in the width direction thereof are respectively provided with the slider bars 18, and a slider guide space for one of the first slider 40a and the second slider 40b is formed between the side wall of each side and the slider bar 18 of the side;

the side walls of the bottom case 10 at two sides are respectively provided with the installation bosses 14 in pairs, the installation bosses 14 at each side are arranged in pairs parallel to the sliding direction of the first slider 40a and the second slider 40b, therefore, the installation bosses 14 arranged in pairs at each side can form sliding limit at two ends of the slider guide space at the side and can also be used for fixing the cover plate 50;

the back case 10 has a paddle mounting post 15 between the slider guide spaces on both sides for enabling the paddle 60 to be swingably mounted between the first slider 40a and the second slider 40 b.

With further attention to fig. 4 while referring to fig. 1 and 2, the drawbar 20 has an inner limiting protrusion 21 and an outer limiting protrusion 22 protruding in the width direction of the push-pull opening 11, wherein the inner limiting protrusion 21 may form a limiting interference at the inner side of the end wall where the push-pull opening 11 is located, and the outer limiting protrusion 22 may form a limiting interference at the outer side of the end wall where the push-pull opening 11 is located. Thus, the limit position of the push-pull stroke of the drawbar 20 can be defined by the above-described limit interference. And, there is the spacing groove 26 including wide groove section 261 and narrow groove section 262 between the both ends of pull rod 20, wherein, the wide groove section 261 of this spacing groove 26 is through the limit position of the push-and-pull stroke of restriction pull rod 20 of the bell and spigot cooperation with rotatory lock post 81. That is, the inner and outer stopper protrusions 21 and 22 and the stopper groove 26 form a double restriction on the limit position of the push-pull stroke of the drawbar 20.

As can be seen from fig. 2 and 4, the inner end of the pull rod 20 extending into the bottom case 10 has a cross link 23 spanning between a first slider 40a and a second slider 40b, wherein both ends of the cross link 23 have a first reversing hinge hole 24a and a second reversing hinge hole 24b, and the first reversing hinge hole 24a and the second reversing hinge hole 24b are respectively used for the first slider 40a and the second slider 40b and are alternatively used; the cross link 23 is provided with a first push-pull limit connecting hole 25a and a second push-pull limit connecting hole 25b which are arranged side by side between the first direction changing hinge hole 24a and the second direction changing hinge hole 24b, and the first push-pull limit connecting hole 25a and the second push-pull limit connecting hole 25b are alternatively used to achieve sliding engagement with the cover plate 50. In addition, the outer end of the pull rod 20 extending out of the bottom case 10 has a rectangular mounting hole 27 for connecting a push-pull handle.

Referring to fig. 5 in addition to fig. 1 and 2, the driving shaft 30 can be rotatably mounted to the bottom case 10 by rotatably engaging with the rotating shaft mounting post 13, and the gear plate 32 for forming an interlocking motion with the first slider 40a and the second slider 40b is provided under the bottom plate 31 of the driving shaft 30.

As can be seen from fig. 2 and 5, the upper main body 33 of the driving shaft 30 has a rectangular rod hole 34 for driving connection with the lock cylinder, and the peripheral surface of the upper main body 33 is further opened with a locking groove 35 for locking engagement with the movable latch 70.

Referring to fig. 6a and 6b with further attention to fig. 1 and 2, first and second sliders 40a and 40b are respectively disposed in slider guide spaces formed between both side walls of the bottom case 40 and the slider bars 18, so that the first and second sliders 40a and 40b can be slidably mounted to the bottom case 10 in parallel to the length direction of the bottom case 10 and at opposite sides of the driving shaft 30. In addition, in order to achieve the limit fitting with the mounting bosses 14 arranged in pairs on each side, the first slider 40a has a first bending limit portion 44a for limit movement between the pair of mounting bosses 14 on the corresponding side, and the second slider 40b correspondingly has a second bending limit portion 44b for limit movement between the pair of mounting bosses 14 on the corresponding side.

Please refer to fig. 1 and fig. 2 and further focus on fig. 7, a central hole 61 of the pick 60 is inserted into the pick mounting post 15, and a first engaging groove 62a and a second engaging groove 62b at two ends of the pick 60 are rotatably engaged with the first interconnecting engaging post 41a of the first slider 40a and the second interconnecting engaging post 41b of the second slider 40b, respectively, so as to realize that two ends of the pick 60 are rotatably connected with the first slider 40a and the second slider 40b, respectively, and further restrict the sliding directions of the first slider 40a and the second slider 40b to be opposite directions by the reverse swinging of the first engaging groove 62a and the second engaging groove 62b at two ends of the pick 60.

Wherein the first slider 40a has a first rack 43a kneaded with the toothed disc 32 at one side of the driving shaft 30, and the second slider 40b has a second rack 43b meshed with the toothed disc 32 at the other side of the driving shaft 30, so that the first slider 40a and the second slider 40b are linked with the driving shaft 30 in opposite directions to each other.

Also, the first slider 40a has a first screw coupling hole 42a for detachably coupling with the first direction changing hinge hole 24a of one end of the cross link 23 of the draw bar 20 by means of the direction changing mounting screw 92, and similarly, the second slider 40b has a second screw coupling hole 42b for detachably coupling with the second direction changing hinge hole 24b of the other end of the cross link 23 of the draw bar 20 by means of the direction changing mounting screw 92.

That is, one of the first and second sliders 40a and 40b is detachably and fixedly coupled to a corresponding end portion of the cross link 23, so that the draw bar 20 is detachably and fixedly coupled to one of the first and second sliders 40a and 40b, which are respectively located at different sides of the driving shaft 30.

Referring to fig. 8 in addition to fig. 1 and 2, the cover plate 50 may be fixed to the bottom case 10 by a cover plate mounting screw 91 screwed to the mounting boss 14, the cover plate 50 has a first slide groove 51a and a second slide groove 51b which are oppositely offset in parallel to the push-pull direction of the pull rod 20, and the first slide groove 51a and the second slide groove 51b may alternatively be slidably engaged with a push-pull limit screw 94.

Wherein, when the push-pull limiting screw 94 is slidably engaged with the first slide groove 51a, the push-pull limiting screw 94 can be mounted on the cross link 23 of the pull rod 20 corresponding to the first limiting connection hole 25a of the first slide groove 51a through the push-pull limiting post 93, and when the push-pull limiting screw 94 is slidably engaged with the second slide groove 51b, the push-pull limiting screw 94 can be mounted on the cross link 23 of the pull rod 20 corresponding to the second limiting connection hole 25b of the second slide groove 51b through the push-pull limiting post 93. That is, the pull rod 20 may be detachably slidably engaged with one of the first slide groove 51a and the second slide groove 51 b.

The cover plate 50 has a first guide groove 52a parallel to the first slide groove 51a at a position corresponding to the first slider 40a and a second guide groove 52b parallel to the second slide groove 51b at a position corresponding to the second slider 40b, and the pull rod 30 and the first slider 40a or the second slider 40b connected thereto alternatively can be slidably fitted to a corresponding one of the first guide groove 52a and the second guide groove 52b by the reversing mounting screw 92. Thus, a double-rail slide is formed in which the first slide groove 51a or the second slide groove 51b is slidably fitted in parallel to the first guide groove 52a or the second guide groove 52 b.

As can be seen from fig. 2 and 8, the cover plate 50 is provided with a shaft hole 50 for the upper main body 33 of the driving shaft 30 to extend from the bottom case 10; the cover plate 50 is provided with a mounting hole 54 for a cover plate mounting screw 91 to pass through, a matching hole 55 matched with the plectrum mounting column 15, an avoiding hole 56 avoiding the fixture block limiting protrusion 16, a screw hole 57 for passing through a fixture block mounting screw 95 and a lock column hole 58 for passing through the rotary lock column 81.

Figure 9 is a schematic diagram of the linkage of the push-pull modules in one embodiment of the present invention. Please refer to fig. 9, focusing attention on fig. 2 to 8:

first, the direction changing mounting screw 92 is alternatively mounted to the first direction changing mounting hole 24a or the second direction changing mounting hole 24b of the draw bar 20, so that the draw bar 20 can be alternatively detachably assembled with the first slider 40a and the second slider 40b, and by alternatively detachably assembling with the first slider 40a and the second slider 40b, the push-pull stroke of the draw bar 20 can be associated to different sides of the driving shaft 30 through the transmission Link _ a formed by the first slider 40a or the transmission Link _ b formed by the second slider 40b, so that the push-pull stroke of the draw bar 20 can be linked to the rotation of the driving shaft 30;

secondly, by mounting the push-pull limit screw 94 alternatively to the first limit connection hole 25a or the second connection limit hole 25b of the pull rod 20 through the push-pull limit post 93, it is possible to realize the alternative detachable sliding fitting of the pull rod 20 to the first slide groove 51a and the second slide groove 51b of the cover plate 50 through the push-pull limit screw 94, and by the alternative detachable sliding fitting to the first slide groove 51a and the second slide groove 51b, the push-pull stroke of the pull rod 20 can be switched between the push-in offset Dev _ a defined by the first slide groove 51a and the reverse pull-out offset Dev _ b defined by the second slide groove 51b, so that the push-pull stroke associated with the rotation of the drive shaft 30 can be pushed in between the offset Dev _ a and the pull-out offset Dev _ b in different directions;

in addition, the lengths of the first guide groove 52a and the second guide groove 52b can cover the push-in offset Dev _ a and the pull-out offset Dev _ b in both directions, so that the reversing mounting screw 92 slidably engaged with the first guide groove 52a or the second guide groove 52b can be slid in parallel regardless of which of the first slide groove 51a and the second slide groove 51b the push-pull stopper screw 94 is slidably engaged.

Fig. 10 is a schematic view of a first linkage mode based on the linkage principle shown in fig. 9. Referring to fig. 10 in conjunction with fig. 9, in fig. 10, the reversing mounting screw 92 is mounted in the first reversing mounting hole 24a of the drawbar 20 and is in sliding engagement with the first guide groove 52a to relate the push-pull stroke of the drawbar 20 to the drive shaft 30 through the drive connection Link _ a formed by the first slider 40a, and the push-pull limit screw 94 is mounted in the first limit connection hole 24a of the drawbar 20 and is in sliding engagement with the first slide groove 51a to constrain the push-pull stroke of the drawbar 20 to the push-in offset Dev _ a defined by the first slide groove 51 a. Accordingly, by associating the push-in offset Dev _ a of the tie rod 20 to the drive shaft 30 on the side where the first slider 40a is located, the rotational drive of the first Phase zone Phase _ aa can be formed in the second quadrant of the rotational plane coordinate system of the drive shaft 30.

Fig. 11 is a schematic view of a second linkage mode based on the linkage principle shown in fig. 9. Referring to fig. 11 in conjunction with fig. 9, in fig. 11, the reversing mounting screw 92 is mounted in the first reversing mounting hole 24a of the drawbar 20 and is in sliding engagement with the first guide groove 52a to relate the push-pull stroke of the drawbar 20 to the drive shaft 30 through the drive connection Link _ a formed by the first slider 40a, and the push-pull limit screw 94 is mounted in the second limit connection hole 24b of the drawbar 20 and is in sliding engagement with the second slide groove 51b to constrain the push-pull stroke of the drawbar 20 to the pull-out offset Dev _ b defined by the second slide groove 51 b. Accordingly, by associating the pull-out offset Dev _ b of the tie rod 20 to the drive shaft 30 on the side of the first slider 40a, the rotational drive of the second Phase interval Phase _ ab, which is opposite in direction to the rotational drive of the first Phase interval Phase _ aa, can be formed in the third quadrant of the rotation plane coordinate system of the drive shaft 30.

Fig. 12 is a schematic view of a third interlocking mode based on the interlocking principle shown in fig. 9. Referring to fig. 12 in conjunction with fig. 9, in fig. 12, the reversing mounting screw 92 is mounted in the second reversing mounting hole 24b of the drawbar 20 and is in sliding engagement with the second guide groove 52b to relate the push-pull stroke of the drawbar 20 to the drive shaft 30 through the drive connection Link _ b formed by the second slider 40b, and the push-pull limit screw 94 is mounted in the first limit connection hole 24a of the drawbar 20 and is in sliding engagement with the first slide groove 51a to constrain the push-pull stroke of the drawbar 20 to the push-in offset Dev _ a defined by the first slide groove 51 a. Accordingly, by associating the push-in offset Dev _ a of the tie rod 20 to the drive shaft 30 on the side where the second slider 40b is located, the rotational driving of the third Phase interval Phase _ ba, which is opposite in direction to the rotational driving of the first Phase interval Phase _ aa, can be formed in the first quadrant of the rotation plane coordinate system of the drive shaft 30.

Fig. 13 is a schematic view of a fourth linkage mode based on the linkage principle shown in fig. 9. Referring to fig. 13 in conjunction with fig. 9, in fig. 13, the reversing mounting screw 92 is mounted in the second reversing mounting hole 24b of the drawbar 20 and is in sliding engagement with the second guide groove 52b to relate the push-pull stroke of the drawbar 20 to the drive shaft 30 through the drive connection Link _ b formed by the second slider 40b, and the push-pull limit screw 94 is mounted in the second limit connection hole 24b of the drawbar 20 and is in sliding engagement with the second slide groove 51b to constrain the push-pull stroke of the drawbar 20 to the pull-out offset Dev _ b defined by the second slide groove 51 b. Therefore, by associating the pull-out offset Dev _ b of the tie rod 20 to the drive shaft 30 on the side where the second slider 40a is located, the rotational drive of the fourth Phase interval Phase _ bb in the same direction as the rotational drive of the first Phase interval Phase _ aa can be formed in the fourth quadrant of the rotation plane coordinate system of the drive shaft 30.

In the four interlocking modes shown in fig. 10 to 13, one of the push-in offset Dev _ a and the pull-out offset Dev _ b may correspond to the push operation of the opening and closing fan, and the other of the push-in offset Dev _ a and the pull-out offset Dev _ b may correspond to the pull operation of the opening and closing fan; the rotational driving of the driving shaft 30 by the first Phase interval Phase _ aa and the fourth Phase interval Phase _ bb in the clockwise direction may correspond to the recovery of the latch at one side of the opening and closing fan, and the rotational driving of the driving shaft 30 by the second Phase interval Phase _ ab and the third Phase interval Phase _ ba in the counterclockwise direction may correspond to the recovery of the latch at the other side of the opening and closing fan.

It can be seen that by selecting the mounting positions of the reversing mounting screw 92 and the push-pull limit screw 94, the linkage between the pull rod 20 and the drive shaft 30 can be switched between four arrangements of pushing from the left side of the opening-closing fan, pulling from the left side of the opening-closing fan, pushing from the right side of the opening-closing fan, and pulling from the right side of the opening-closing fan.

The pull rod 20 can be linked with a push-pull handle, the driving shaft 30 can be linked with a lock cylinder of an electronic lock such as a fingerprint lock, and on the basis, the rotary lock cylinder 81, the transmission gear shaft 82, the transmission rack 83 and the transmission connecting cylinder 84 can be used as an additional lock linkage mechanism and are matched with the movable clamping block 70 to realize an additional locking function based on a manual lock.

Figures 14a and 14b are partial structural schematic views of the additional lock linkage of the push-pull module shown in figure 2. As shown in fig. 14a and 14 b:

the transmission connecting column 84 is arranged in the column groove 17 of the bottom box 10, wherein the outer shaft end 841 of the transmission connecting column 84 is exposed out of the column groove 17 and is used for connecting the lock cylinder of the manual lock; the internal fluted disc 842 of the transmission connecting column 84 is arranged in the bottom box 10 and is used for matching with the transmission rack 83;

the driving rack 83 is installed in the receiving space formed between the end wall of the bottom case 10 and the rack bar 19, wherein the driving rack 83 has a standing tooth portion 831 on one side of the push-pull opening 11, and the standing tooth portion 831 is engaged with the internal toothed plate 842 below the internal toothed plate 842 of the driving connection column 84; the transmission rack 83 has a flat tooth portion 832 at the other side of the push-pull opening 11 for engaging with the transmission pinion 82;

the lower part of the transmission gear shaft 82 is provided with a transmission gear 821 meshed with a flat tooth part 832 of the transmission rack 83, and the upper part of the transmission gear shaft 82 is provided with a phase-change driving groove 822 matched with the rotary lock cylinder 81;

the circumferential surface of the rotary lock cylinder 81 has a pair of lock lugs 811, and the lower portion of the rotary lock cylinder 81 has a phase change driving lug 812 positioned in a phase change driving groove 822 of the transmission gear shaft 82.

Based on the above structure, the rotation of the transmission connection column 84 can be converted into the rotation of the phase change driving slot 822 of the transmission gear shaft 82, and the phase change driving slot 822 and the phase change driving lug 812 are matched and linked, so that the lock lug 811 of the rotary lock column 81 can be driven to change the phase.

Figure 15 is a schematic view of the locking principle of the additional linkage of the push-pull module in one embodiment of the invention. Referring to fig. 15, the rotation lock cylinder 81 is in transmission connection with the transmission connection cylinder 84, and has a degree of freedom for driving the rotation of the peripheral lock lug 811, wherein the lock lug 811 in the locking phase (the end position of the dotted arc arrow in fig. 15) can press the movable latch 70 at the locking position (the movable latch 70 shown by the dotted line in fig. 15), and the lock lug 811 in the unlocking phase (shown by the solid line in fig. 15) releases the pressing of the movable latch 70.

Accordingly, the movable latch 70 has a degree of freedom to slide between a locking position to lock the drive shaft 30 and an unlocking position to release the drive shaft 30. The movable latch 70 has a fitting elongated hole 77, and a latch mounting screw 95 is fixed to the mounting hole 54 of the cover plate 50 through the fitting elongated hole 77 to form a degree of freedom of sliding the movable latch 70 within the length range of the fitting elongated hole 77.

The width of the movable latch 70 is smaller than the interval between the first and second guide grooves 52a and 52b, and the movable latch 70 further has a shaft hole escape window 73 exposing the driving shaft 30 and a slide groove escape window 72 exposing the first and second slide grooves 51a and 51b, so that the sliding of the movable latch 72 can be prevented from interfering with the driving shaft 30, the direction-changing mounting screw 92 and the push-pull stopper screw 94.

The movable fixture block 70 is also provided with a locking lug 71 and a limiting fixture groove 76. The locking lug 71 of the movable clamping block 70 at the locking position can be matched with the locking groove 35 of the driving shaft 30 to realize the locking of the driving shaft 30, and the limit clamping groove 76 of the movable clamping block 70 at the locking position is clamped with the clamping block limit protrusion 16 of the bottom case 10.

In addition, an elastic member, such as a torsion spring 700, is further connected to the movable latch 70, and generates an elastic force to the movable latch 70 to move to the locking position. In the case that the torsion spring 700 is selected as the elastic member, the torsion spring 700 may be wound around the latch mounting screw 95, and the movable latch 70 may have 75 torsion spring catches 75 fixing the ends of the torsion spring 700.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (20)

1. A push-pull module for a push-pull lock, comprising:

a bottom case (10);

a pull rod (20), wherein the pull rod (20) is arranged on the bottom box (10) in a push-and-pull way;

a drive shaft (30), wherein the drive shaft (30) is rotatably arranged on the bottom box (10);

a cover plate (50), the cover plate (50) covering the bottom case (10) and exposing the driving shaft (30);

wherein the push-pull travel of the tie rod (20) is associated by means of a removable fitting to one of the two directions of rotation of the drive shaft (30);

and, the offset direction of the push-pull stroke of the tie rod (20) is constrained by the detachable fitting to be one of the push-in and pull-out directions of the tie rod (20).

2. Push-pull module according to claim 1, characterized in that the bottom box (10) has a push-pull opening (11) through which the pull rod (20) passes.

3. Push-pull module according to claim 2, characterized in that the pull rod (20) has an inner limit projection (21) and an outer limit projection (22) which project in the width direction of the push-pull opening (11), wherein the inner limit projection (21) forms a limit interference on the inside of the back box (10) and the outer limit projection (22) forms a limit interference on the outside of the back box (10).

4. Push-pull module according to claim 1, characterized in that the back box (10) has a spindle mounting post (13) and the drive shaft (30) is rotationally keyed to the spindle mounting post (13).

5. The push-pull module as claimed in claim 1, further comprising:

a first slider (40a), said first slider (40a) being slidably mounted to said bottom case (10) at one side of said drive shaft (30);

a second slider (40b), the second slider (40b) being slidably mounted to the bottom case (10) at the other side of the driving shaft (30);

wherein the first slider (40a) and the second slider (40b) are interlocked with the driving shaft (30) in opposite directions to each other, and the pull rod (20) is detachably fixedly connected to one of the first slider (40a) and the second slider (40 b).

6. Push-pull module according to claim 5, characterized in that the cover plate (50) has a first guide groove (52a) parallel to the first runner (51a) at a position corresponding to the first slider (40a) and a second guide groove (52b) parallel to the second runner (51b) at a position corresponding to the second slider (40b), and in that one of the first slider (40a) and the second slider (40b) and the pull rod (20) further slidably engage with the corresponding one of the first guide groove (52a) and the second guide groove (52 b).

7. The push-pull module according to claim 5, further comprising a paddle (60), wherein the paddle (60) is swingably mounted to the chassis (10) between the first slider (40a) and the second slider (40b), and both ends of the paddle (60) are rotatably connected to the first slider (40a) and the second slider (40b), respectively.

8. A push-pull module as claimed in claim 7, characterized in that the bottom casing (10) has a paddle mounting post (15), the central hole (61) of the paddle (60) is arranged through the paddle mounting post (15), and the catch grooves (62a, 62b) at both ends of the paddle (60) are rotatably caught in the interconnecting catch posts (41a, 41b) of the first slider (40a) and the second slider (40b), respectively.

9. A push-pull module according to claim 5, characterized in that the back case (10) has mounting bosses (14) arranged in pairs in the sliding direction of the first slider (40a) and the second slider (40b), respectively, the first slider (40a) and the second slider (40b) have bending stopper portions (44a, 44b) for restricting movement between a pair of the mounting bosses (14) on the corresponding sides, respectively, and the cover plate (50) is fixed to the back case (10) by screws (91) screwed to the mounting bosses (14).

10. Push-pull module according to claim 5, characterized in that a toothed disc (32) is provided below the chassis (31) of the drive shaft (30), the first slider (40a) and the second slider (40b) having respective toothed racks (43a, 43b) which the toothed disc (32) engages.

11. Push-pull module according to claim 5, characterized in that the inner end of the pull rod (20) projecting into the back box (10) has a cross-link (23) spanning between the first slider (40a) and the second slider (40b), and in that one of the first slider (40a) and the second slider (40b) is detachably fixedly connected with the corresponding end of the cross-link (23).

12. A push-pull module according to claim 11, characterized in that the cross link (23) has limit connection holes (25a, 25b) corresponding to the first and second sliding grooves (51a, 51b), respectively, one of the first and second sliding grooves (51a, 51b) is detachably slidably engaged with the pull rod (20) through a push-pull limit post (93) received in a corresponding one of the limit connection holes (25a, 25b), and the push-pull limit post (93) is fixed in a corresponding one of the limit connection holes (25a, 25b) by a screw (94).

13. A push-pull module according to claim 11, characterized in that the first slider (40a) and the second slider (40b) have screw holes (42a, 42b), respectively, and both ends of the cross link (23) have hinge holes (24a, 24b), respectively, and the screw holes (42a, 42b) of one of the first slider (40a) and the second slider (40b) are connected with the hinge holes (24a, 24b) of the corresponding end of the cross link (23) by screws (92).

14. A push-pull module according to claim 13, characterized in that the cover plate (50) has a first guide groove (52a) parallel to the first runner (51a) at a position corresponding to the first slider (40a) and a second guide groove (52b) parallel to the second runner (51b) at a position corresponding to the second slider (40b), and the screw (92) is further slidably engaged with a corresponding one of the first guide groove (52a) and the second guide groove (52 b).

15. A push-pull module according to claim 1, characterized in that the cover plate (50) has a first runner (51a) and a second runner (51b) oppositely offset parallel to the push-pull direction of the pull rod (20), and that the pull rod (20) is detachably slidably engaged with one of the first runner (51a) and the second runner (51 b).

16. The push-pull module according to claim 1, further comprising a movable latch (70), wherein the movable latch (70) is slidably mounted to the cover plate (50), and wherein the movable latch (70) has a degree of freedom to slide between a locked position locking the drive shaft (30) and an unlocked position releasing the drive shaft (30).

17. The push-pull module as claimed in claim 16, wherein the cover plate (50) has a shaft hole (53) through which the upper body (33) of the driving shaft (30) passes, the upper body (33) is formed with a rectangular rod hole (34), and the outer circumference of the upper body (33) is formed with a locking groove (35) engaged with the locking tab (71) of the movable latch (70).

18. The push-pull module according to claim 16, wherein the bottom case (10) has a stopper limiting protrusion (16), the movable stopper (70) has a limiting groove (76) engaged with the stopper limiting protrusion (16) when being in the locking position, the movable stopper (70) is further connected with an elastic member (700), and the elastic member (700) generates an elastic force to the movable stopper (70) to move to the locking position.

19. A push-pull module as claimed in claim 16, further comprising a rotary lock cylinder (81), said rotary lock cylinder (81) being drivingly connected to a drive connection cylinder (84) extending outside the chassis (10), and said rotary lock cylinder (81) having a degree of freedom to rotate a peripheral lock lug (811), wherein said lock lug (811) in a locked phase presses said movable latch (70) in said locked position, and said lock lug (811) in an unlocked phase releases the pressing of said movable latch (70).

20. Push-pull module according to claim 19, characterized in that the rotary lock cylinder (81) is in driving connection with the drive connection column (84) via a drive pinion (82) and a drive rack (83) arranged in the back box (10).

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