CN108756540B - Bolt mechanism and world bolt device using same - Google Patents

Abstract

The invention discloses a bolt mechanism which comprises a panel, a deflector rod, a bolt rod, a driving frame, a rear cover and a gear, wherein the deflector rod is arranged on the panel through rivets, one end of the deflector rod penetrates through the panel to be connected with the driving frame, the driving frame is slidably arranged on the panel, the rear cover is slidably arranged on the driving frame, a first rack is arranged on the driving frame, a second rack is arranged on the rear cover, one end of the gear is fixed on the panel, the other end of the gear is meshed with the first rack and the second rack respectively, and the rear cover is connected with the bolt rod. The invention also discloses a top-bottom bolt device using the top-bottom bolt device, which comprises the bolt mechanism, a bolt head and a bolt seat, wherein one end of the bolt head is connected with the bolt mechanism through a bolt rod, and the other end of the bolt head is spliced in the bolt seat. The latch mechanism is driven by adopting a gear rack structure, is stable in transmission, is not easy to fail and has long service life. The bolt mechanism is installed on the top and bottom bolt device, and after the bolt mechanism is matched with the bolt head and inserted into the bolt seat, the whole bolt device cannot loosen and rotate, and the fixing effect is good.

Description

Bolt mechanism and world bolt device using same

Technical Field

The invention relates to the field of door and window accessories, in particular to a bolt mechanism and a top-bottom bolt device using the same.

Background

The latch is an anti-theft part for preventing the door and window from being opened from the outside, and along with the rapid development of the door and window industry, the variety and structure of the latch are more and more diversified. The top and bottom bolt is one of them.

The top and bottom of the door and window can be provided with the top and bottom of the door and window, the existing top and bottom bolts mainly comprise a manual type and an automatic type, and the automatic cost is high, so that the manual type door and window is more in application. At present, the manual world bolt generally includes parts such as panel, driving lever and bolt pole, and the driving lever sets up in the panel, and the one end of driving lever passes the panel and be connected with bolt pole power, and the user can control the bolt pole and insert the jamb with the hand driving lever, and then realizes the locking of door and window, can't open from the outside.

The current chinese patent of patent number 201621459153.3 discloses a novel manual world bolt, including fixed plate, slider and bolt pole, the lower part of fixed plate forms a kink, the medial surface of kink is located to the slider, and logical groove has been seted up to this kink, and two medial surfaces of this logical groove all are equipped with a plurality of draw-in grooves, be equipped with pinching plate and conflict board in the logical groove, be equipped with the connecting rod in the lower part of slider, the one end and pinching plate fixed connection of this connecting rod, its other end and slider rotationally are connected, the conflict board is connected with the bottom of slider. The use mode of the top-bottom bolt is that the pinching plate and the abutting plate are pinched to drive the sliding block to slide, so that the bolt rod is driven to slide, the operation in a manual pinching control mode is laborious and tedious, the spring is required to reset, the service life of the spring is short, and the spring is easy to break down to influence normal use.

In addition, in order to realize the fixed of bolt pole, current operation is generally directly beaten on upper and lower door frame or window frame and bolt hole matched with bolt pole, still some are realized the fixed of bolt pole through the bolt nose that sets up to have the bolt hole, but above-mentioned bolt pole inserts the bolt hole after, owing to there is the clearance between bolt hole and the bolt pole, the bolt pole rocks easily, and then causes whole door and window to rock, influence normal use, and after long-time use, the bolt hole can be bigger and bigger, also the fixed effect to the bolt pole is worse and worse.

Disclosure of Invention

The invention aims to provide a bolt mechanism with simple structure, simple and labor-saving operation and high safety, and simultaneously provides a top and bottom bolt device with good fixing effect, convenient use and high safety.

In order to achieve the above object, according to one aspect of the present invention, there is provided a latch mechanism, including a panel, a driving lever, a latch lever, a driving frame, a rear cover, and a gear, wherein the driving lever is disposed on the panel by a rivet, one end of the driving lever passes through the panel to be connected with the driving frame, the driving frame is slidably disposed on the panel, the rear cover is slidably disposed on the driving frame, a first rack is disposed on the driving frame, a second rack is disposed on the rear cover, one end of the gear is fixed on the panel, the other end is engaged with the first rack and the second rack, and the rear cover is connected with the latch lever.

Therefore, the deflector rod is pulled to drive the driving frame to slide, the first rack on the driving frame drives the gear to rotate, the gear drives the second rack to drive the rear cover to slide, the rear cover drives the latch rod to be inserted into the corresponding latch hole together, locking of doors and windows is achieved, the latch mechanism for the doors and windows is driven by adopting a gear rack driving structure, the driving process is stable, the efficiency is high, faults are not easy to occur, and the service life is greatly prolonged; the whole control process can be completed by only pulling the deflector rod up and down, and the operation is simple and convenient.

In some embodiments, the latch mechanism further comprises a pin, the driving frame is provided with a pin mounting hole, the pin is mounted in the pin mounting hole, the tail end of the deflector rod is connected with the driving frame through the pin, and the distance between the rivet and the head end of the deflector rod is larger than the distance between the rivet and the pin. The end part of the poking rod is poked, the poking rod rotates by taking the rivet as a fulcrum, and then the pin is driven to push the driving frame to slide relative to the panel, and the power arm of the poking rod is larger than the resistance arm, so that the poking rod is a labor-saving lever, the operation force is greatly reduced, and the operation is convenient.

In some embodiments, the driving frame is provided with a first groove and a first convex strip, the rear cover is provided with a second convex strip and a third convex strip, the panel is provided with a second groove, the first convex strip, the second convex strip and the second groove are in sliding fit, and the third convex strip and the first groove are in sliding fit. From this, the second recess on the panel can be followed to the drive frame, and the back lid can be followed the second recess of panel and the first recess on the drive frame and slided, and the sliding fit between panel, drive frame, the back lid has been realized in corresponding recess and the setting of sand grip.

In some embodiments, the latch mechanism further comprises a locking device, the locking device is arranged at one end of the panel, the locking device comprises an adjusting head, a limiting piece, a first pressing piece and a first fastening screw, the panel is provided with a locking device mounting hole, the adjusting head is arranged in the locking device mounting hole, the limiting piece is arranged on the adjusting head, the first pressing piece is arranged on the limiting piece, the first fastening screw sequentially penetrates through the first pressing piece, the limiting piece and the adjusting head in a threaded fixed connection mode, a stop block is arranged on the limiting piece, and the stop block is matched with the rear cover. Therefore, the locking device is used after the rear cover drives the bolt rod to be inserted into the bolt hole and is used for locking the rear cover to prevent the rear cover from moving, the first pressing piece, the limiting piece and the adjusting head are connected into a whole through the first fastening screw, the adjusting head is screwed by the screwdriver, the adjusting head is rotated to drive the first pressing piece and the limiting piece to rotate together, the stop block is driven to rotate to block the rear cover, the rear cover is effectively prevented from being reversely pushed by the bolt rod, otherwise, during unlocking, the adjusting head is only required to be reversely screwed, and the stop block is driven to rotate to return to the original position.

In some embodiments, the locking device further comprises a steel ball and a first spring, the panel is provided with a first mounting groove, the first mounting groove is communicated with the locking device mounting hole, the first spring is mounted in the first mounting groove, the adjusting head is provided with a third groove, one end of the steel ball is mounted in the third groove, and the other end of the steel ball is connected with the first spring. Therefore, when the locking is performed, the adjusting head rotates to push the steel balls to compress the first spring, the steel balls are extruded from the third groove, and the first pressing piece and the limiting piece can rotate along with the adjusting head, so that the locking function is realized; on the contrary, when the lock is unlocked, the adjusting head is reversely screwed, the adjusting head rotates to return to the original position, the steel balls return to the third groove under the action of the first spring, the steel balls play a limiting role, and the first spring plays a resetting role.

According to another aspect of the invention, there is further provided a top and bottom latch device, including the latch mechanism, and further including a latch head and a latch seat, one end of the latch head is connected with the latch mechanism through a latch rod, the other end is inserted into the latch seat, the latch head includes a main body, a third spring and a fourth convex strip, the fourth convex strip is movably disposed on two sides of the main body, two ends of the third spring are respectively connected with the fourth convex strip and the main body, the latch seat includes a base, the fourth spring and a baffle, the fourth spring and the baffle are mounted on the base, a first mounting hole is formed on the base, the baffle is disposed outside the first mounting hole and presses the fourth spring on the base, one end of the main body passes through the first mounting hole to be abutted against the baffle, and the fourth convex strip is matched with the first mounting hole.

Therefore, the bolt mechanism and the bolt head of the top and bottom bolt device are connected through the bolt rod and are all installed on the door and window main body, the bolt seat is installed on the door and window frame, the fourth raised line can compress the third spring and move along the main body, when the bolt mechanism is used for controlling the bolt head to be inserted into the bolt seat, the main body drives the fourth raised line to tightly press the baffle together, the baffle tightly presses the fourth spring, the fourth spring contracts, the baffle is supported by reverse action, two sides of the raised line can contact two side walls of the first installation hole when the main body is pressed down, the fourth raised line is pushed to tightly press the third spring, the third spring contracts and the reverse action enables the fourth raised line to be tightly pressed on the side wall of the first installation hole, the third spring is opposite to the acting force of the fourth spring, the main body of the bolt head is firmly fixed by the action of the third spring and the fourth spring, looseness and rotation can not occur, and use safety is greatly improved.

In some embodiments, the main body is provided with a second limit groove and a third limit groove, the third limit groove is arranged on two sides of the second limit groove, the fourth raised line and the third spring are both arranged on the second limit groove, and two sides of the fourth raised line are provided with limit strips which are in sliding fit with the third limit groove. Thereby pushing on

And the limit strips on two sides of the fourth raised strip can slide in the third limit groove, and meanwhile, the whole fourth raised strip slides in the second limit groove to compress the third spring, so that the movable connection between the fourth raised strip and the main body is realized.

In some embodiments, the base body comprises a mounting plate and a base, the base is fixedly arranged on one side of the mounting plate, the first mounting hole is formed in the center of the mounting plate, the center of the base is provided with a cylindrical mounting groove, the cylindrical mounting groove is communicated with the first mounting hole and is formed in the periphery of the first mounting hole, the fourth spring and the baffle are arranged in the cylindrical mounting groove, the baffle is a circular plate, and the outer diameter of the baffle is identical to the inner diameter of the cylindrical mounting groove. Therefore, the diameter of the baffle is larger than the length and the width of the mounting hole, the baffle cannot fall out of the mounting hole, the baffle can shield the fourth spring in the cylindrical mounting groove, sundries are effectively prevented from entering, and the structure is attractive.

In some embodiments, the fourth spring is a cylindrical compression spring having an outer diameter that is the same as an inner diameter of the cylindrical mounting groove. From this, the external diameter of second spring is the same with the internal diameter of cylindrical mounting groove, and the atress of second spring is more even when compressing the second spring, long service life.

In some embodiments, the top and bottom latch device further comprises a mounting seat, wherein the mounting seat is arranged on the periphery of the latch head, the mounting seat is of a hollow structure, and the latch head penetrates through the mounting seat to be inserted into the latch seat. Therefore, the installation seat is convenient for fixing the bolt head, and meanwhile, the third spring is protected.

The bolt mechanism is driven by adopting a gear-rack transmission structure, the transmission process is stable, the efficiency is high, faults are not easy to occur, and the service life is greatly prolonged; the whole control process can be completed by only pulling the deflector rod up and down, and the operation is simple and convenient; the distance between the rivet and the head end of the deflector rod is greater than the distance between the rivet and the pin, and the deflector rod is a labor-saving lever, so that the operation force is greatly reduced, and the operation is convenient.

The bolt mechanism is installed on the top and bottom bolt device, and after the bolt mechanism is matched with the bolt head and inserted into the bolt seat, the whole bolt mechanism cannot loosen and rotate, the fixing effect is good, and the use safety is greatly improved.

Drawings

FIG. 1 is a schematic view of a latch mechanism according to an embodiment of the present invention;

FIG. 2 is a side view of the latch mechanism of FIG. 1;

FIG. 3 is one of the schematic exploded views of the latch mechanism of FIG. 1;

FIG. 4 is a second schematic exploded view of the latch mechanism of FIG. 1;

FIG. 5 is a schematic rear view of the latch mechanism of FIG. 1;

FIG. 6 is a schematic view of the drive rack, rear cover and gear transmission of the latch mechanism of FIG. 1;

fig. 7 is a schematic top view of the latch mechanism of fig. 6.

FIG. 8 is a schematic view of a top and bottom latch device according to an embodiment of the present invention;

FIG. 9 is a schematic view of an exploded view of the latch head, the latch seat and the mounting seat of the top and bottom latch device of FIG. 8;

FIG. 10 is a schematic view of the engagement of the protrusion and the body of the top and bottom latch device shown in FIG. 8;

fig. 11 is a schematic view of the latch base of the top and bottom latch device of fig. 8.

Reference numerals in fig. 1 to 11: 1-a latch mechanism; 2-a pin head; 3-a latch seat; 4-mounting seats; 5-a latch rod; 11-panels; 12-a deflector rod; 13-a drive rack; 14-a rear cover; 15-a gear; 16-rivets; 17-pins; 18-limiting screws; 19-locking means; 20-a snap-fit device; 21-a body; 22-a third spring; 23-fourth convex strips; 31-a base; 32-fourth springs; 33-baffle; 41-fourth grooves; 42-a second mounting hole; 111-a second groove; 112-locking device mounting holes; 113-a first mounting groove; 114-a second mounting slot; 115-a third mounting groove; 131-a first rack; 132—pin mounting holes; 133-a first groove; 134-first ribs; 141-a second rack; 142-second ridge; 143-third ribs; 144-a first limit groove; 145-a latch rod mounting slot; 191-adjusting the head; 192-limit pieces; 193-first tabletting; 194-first fastening screws; 195-steel balls; 196-a first spring; 197-third tabletting; 201-a buckle; 202-a second spring; 203-second tabletting; 211-a second limit groove; 212-a third limit groove; 213-a plug-in slot; 231-a limit bar; 311-mounting plates; 312-a base; 311 a-a first mounting hole; 311 b-a third mounting hole; 312 a-a cylindrical mounting groove; 191 a-third groove; 192 a-stops.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings.

Fig. 1 to 7 schematically show a latch mechanism according to an embodiment of the present invention.

As shown in fig. 1 to 7, the latch mechanism 1 for doors and windows includes a panel 11, a lever 12, a latch lever 5, a driving frame 13, a rear cover 14, a gear 15, a pin 7, a rivet 16, and a limit screw 18. The head of the deflector rod 12 is used for being pulled by a user, the middle part is fixedly arranged on the panel 11 through the rivet 16, and the tail part penetrates through the panel 11 and is connected with the driving frame 13 through the pin 7. The driving frame 13 is slidably disposed on the panel 11, and the rear cover 14 is slidably disposed on the driving frame 13. As shown in fig. 3 and 4, the driving frame 13 is provided with a first groove 133 and a first protrusion 134, and the first protrusion 134 is elongated. The first groove 133 is disposed on one surface of the driving frame 13, and the first protrusion 134 is disposed on the other surface of the driving frame 13. The rear cover 14 is provided with a second ridge 142 and a third ridge 143, the second ridge 142 and the third ridge 143 are provided on the same surface of the rear cover 14, and the third ridge 143 is higher than the second ridge 142. The second ridge 142 is elongated, and the third ridge 143 is L-shaped. The panel 11 is provided with two second grooves 111, and the two second grooves 111 are arranged on the back surface of the panel 11 in parallel. The first protrusion 134 is slidably engaged with one of the second grooves 111, the second protrusion 142 is slidably engaged with the other second groove 111, and the third protrusion 143 is slidably engaged with the first groove 133. Thereby, the driving frame 13 can slide along the second groove 111 on the panel 11, the rear cover 14 can slide along the second groove 111 on the panel 11 and the first groove 133 on the driving frame 13, and the sliding fit among the panel 11, the driving frame 13 and the rear cover 14 is realized by the arrangement of the corresponding grooves and the raised strips. As shown in fig. 4 and 5, the back of the rear cover 14 is provided with two first limiting grooves 144 matched with the limiting screws 18, and the two first limiting grooves 144 are respectively arranged at two ends of the rear cover 14. The number of the limit screws 18 is two correspondingly. One end of the limit screw 18 passes through the first limit groove 144 to be in threaded connection with the panel 11. The limit screw 18 can both realize the connection of the rear cover 14 with the panel 11 and limit the sliding position of the rear cover 14. A latch rod mounting groove 145 is formed in one end face of the rear cover 14, and one end of the latch rod is inserted into the latch rod 5 mounting groove 145 to be connected with the rear cover 14.

As shown in fig. 3 and 6, the driving frame 13 is provided with a first rack 131 and the rear cover 14 is provided with a second rack 141. The panel 11 is provided with a gear mounting groove, which is located between the two second grooves 111. One end of the gear 15 is inserted into the gear mounting groove of the panel 11, and the other end is engaged with the first rack 131 and the second rack 141, respectively. The first rack 131 and the second rack 141 of the present embodiment are disposed in parallel and offset from each other, and the first rack 131 and the second rack 141 are both provided. The two first racks 131 are disposed at two ends of the driving frame 13, and the first racks 131 are disposed at the back of the first protruding strips 134. The two second racks 141 are disposed at both ends of the rear cover 14 and are adjacent to the third protruding bars 143. The first rack 131 and the second rack 141 are parallel and staggered, so that the driving frame 13 and the rear cover 14 can slide in a staggered manner relative to the panel 11, that is, the driving frame 13 slides in one reverse direction, and the rear cover 14 slides in the other reverse direction. As shown in fig. 7, when the driving lever 12 is at the lower limit position, the left side of the gear 15 is meshed with the lower end of the first rack 131 of the driving frame 13, the right side of the gear 15 is meshed with the upper end of the second rack 141 of the rear cover 14, when the door and window need to be locked, the driving lever 12 is pulled upwards, the driving lever 12 drives the first rack 131 of the driving frame 13 to move downwards, the gear 15 is driven to rotate, the gear 15 drives the second rack 141 to move upwards, when the driving lever 12 reaches the upper limit position, the left side of the gear 15 is meshed with the upper end of the first rack 131 of the driving frame 13, and the right side of the gear 15 is meshed with the lower end of the second rack 141 of the rear cover 14.

The principle of operation of the latch mechanism 1 for doors and windows according to the present embodiment is as follows: pulling the deflector rod 12 to drive the driving frame 13 to slide, driving the first rack 131 on the driving frame 13 to drive the gear 15 to rotate, driving the gear 15 to drive with the second rack 141 to further drive the rear cover 14 to slide, driving the latch rod 5 to be inserted into corresponding latch holes together by the rear cover 14, locking and unlocking doors and windows, and reversely pulling the deflector rod 12 to drive the rear cover 14 to drive the latch rod 5 to be pulled out of the latch holes together. The latch mechanism 1 for the doors and windows is driven by adopting a gear 15 rack transmission structure, the transmission process is stable, the efficiency is high, faults are not easy to occur, and the service life is greatly prolonged. The whole control process can be completed by only pulling the deflector rod 12 up and down, and the operation is simple and convenient.

As shown in fig. 3 and 4, the panel 11 is provided with a third mounting groove 115, and the lever 12 is mounted in the third mounting groove 115. The driving frame 13 is provided with a pin mounting hole 132, and the pin 7 is mounted in the pin mounting hole 132. One end of the rivet 16 penetrates through the panel 11 to be riveted with the position, close to the middle, of the deflector rod 12, the pin 7 transversely penetrates through the tail of the deflector rod 12, and two ends of the pin are mounted in the pin mounting holes 132. The linear distance between the rivet 16 and the head of the lever 12 of the present embodiment is greater than the linear distance between the rivet 16 and the pin 7. The head of the deflector rod 12 is dial upwards or downwards, the deflector rod 12 rotates by taking the rivet 16 as a fulcrum, the pin 7 is driven to push the driving frame 13 to slide relative to the panel 11, and the power arm of the deflector rod 12 is larger than the resistance arm, so that the deflector rod 12 is a labor-saving lever, the operation force is greatly reduced, and the operation is convenient.

The latch mechanism 1 for doors and windows of the present embodiment further includes a locking device 19, and the locking device 19 is disposed at one end of the panel 11. The locking device 19 comprises an adjusting head 191, a limiting piece 192, a first pressing piece 193, a first fastening screw 194, a steel ball 195, a first spring 196 and a third pressing piece 197. The panel 11 is provided with a locking device mounting hole 112 and a first mounting groove 113, and the first mounting groove 113 is communicated with the locking device mounting hole 112. The locking device mounting hole 112 is circular, and the first mounting groove 113 is bar-shaped. The first spring 196 is mounted in the first mounting groove 113, and the adjustment head 191 is mounted in the locking device mounting hole 112. An end face of the adjusting head 191 is provided with an inner hexagonal groove matched with the inner hexagonal screw. The side wall of the adjusting head 191 is provided with hemispherical third grooves 191a, two third grooves 191a are arranged, and the two third grooves 191a are oppositely arranged. One end of the steel ball 195 is mounted in the third groove 191a, and the other end presses the first spring 196 against the inner wall of the first mounting groove 113. The limiting piece 192 is disposed at an outer side of the other end surface of the adjusting head 191, and the first pressing piece 193 is disposed at an outer side of the limiting piece 192. The first fastening screw 194 sequentially penetrates through the first pressing piece 193 and the limiting piece 192 to be fixedly connected with the adjusting head 191 into a whole through threads, and the first fastening screw 194 presses the first pressing piece 193 and the limiting piece 192 to the adjusting head 191. One end of the limiting plate 192 is vertically provided with a block 192a921, and the block 192a is matched with one end of the rear cover 14. The third pressing piece 197 is fixed on the panel 11 by a screw, and the third pressing piece 197 is covered above the first mounting groove 113. The third pressing piece 197 can shield the first mounting groove 113, prevent the first spring 196 in the first mounting groove 113 from being ejected out, ensure safety, and simultaneously prevent external sundries from entering the first mounting groove 113, and ensure normal operation of the internal structure.

The locking device 19 of this embodiment is used after the rear cover 14 drives the latch rod 5 to insert into the latch hole, and is used for locking the rear cover 14 and preventing the rear cover 14 from moving. The locking device 19 works on the principle that: when the locking device 19 is required to be locked, the adjusting head 191 is screwed by the inner hexagonal screwdriver, the adjusting head 191 rotates to push the steel balls 195 to compress the first spring 196, the steel balls 195 are extruded from the third groove 191a, the adjusting head 191 rotates to drive the first pressing piece 193 and the limiting piece 192 to rotate together to drive the stop block 192a to rotate so as to block the rear cover 14, the locking function is achieved, and the rear cover 14 is effectively prevented from being reversely pushed by the bolt rod 5. On the contrary, when unlocking, only the adjusting head 191 is required to be reversely screwed, the adjusting head 191 is rotated to return to the original position, the steel balls 195 return to the third groove 191a under the action of the first spring 196, and meanwhile, the adjusting head 191 is rotated to drive the stop block 192a to rotate to return to the original position. The steel ball 195 of the present embodiment plays a limiting role, and the first spring 196 plays a resetting role.

The latch mechanism 1 for doors and windows of the present embodiment further includes a locking device 20, and the locking device 20 is provided at the other end of the panel 11. The catch arrangement 20 comprises a catch 201, a second spring 202 and a second presser 203. The panel 11 is provided with a second mounting groove 114, and the buckle 201 and the second spring 202 are mounted in the second mounting groove 114. One end of the second spring 202 abuts against the panel 11, and the other end is connected to the buckle 201. The buckle 201 of the present embodiment is L-shaped, one end of the buckle 201 extends into the second mounting groove 114, and a spring mounting groove matched with the second spring 202 is provided on the end surface. The other end of the catch 201 is perpendicular to the second mounting groove 114. The second pressing piece 203 is fixed to the panel 11 through a screw, and covers over the buckle 201 and presses the buckle 201 into the second mounting groove 114. The buckle 201 device in the embodiment plays a role in fixing when the latch mechanism 1 for doors and windows is installed, the whole mechanism is embedded into a door and window installation groove during installation, the buckle 201 at the end part of the panel 11 is pressed by the inner wall of the door and window installation groove, the second spring 202 is pushed, the second spring 202 contracts to act on the buckle 201 reversely, so that the buckle 201 is uniformly stressed, and finally the fixation is realized; the second pressing piece 203 is used for shielding the second mounting groove 114, preventing the second spring 202 in the second mounting groove 114 from being ejected out, ensuring safety, and simultaneously preventing external sundries from entering the second mounting groove 114, and ensuring normal operation of the internal structure.

Fig. 8 to 11 schematically show a top-bottom latch device according to an embodiment of the present invention. As shown in fig. 8 to 11, the top and bottom latch device includes the latch mechanism 1, the latch head 2 and the latch seat 3. One end of the bolt head 2 is connected with the bolt mechanism 1 through a bolt rod 5, and the other end is inserted into the bolt seat 3. The bolt head 2 and the bolt mechanism 1 are arranged on a door and a window, the bolt seat 3 is arranged on a door and a window frame, and the bolt head 2 can be controlled to be inserted into or pulled out of the bolt seat 3 by pulling the deflector rod 12 of the bolt mechanism 1, so that the locking or unlocking of the door and the window is realized. The latch head 2 of the present embodiment includes a main body 21, a third spring 22, and a fourth protruding strip 23. One end of the main body 21 is provided with a socket 213, and the socket 213 is used for connecting the latch lever 5. The number of the fourth raised strips 23 and the number of the third springs 22 are two, and the two fourth raised strips 23 are movably arranged on two sides of the main body 21. The both ends of third spring 22 are connected fourth sand grip 23 and main part 21 respectively, and the one end of fourth sand grip 23 and all be provided with the projection on the main part 21, and third spring 22 is cylindrical compression spring, and the both ends of third spring 22 overlap respectively and locate outside the projection of fourth sand grip 23 and main part 21. As shown in fig. 4, the main body 21 is provided with a second limiting groove 211 and a third limiting groove 212, the second limiting groove 211 is provided on two sides of the main body 21, and the fourth protruding strip 23 and the third spring 22 are both mounted on the second limiting groove 211. The third limiting groove 212 is disposed at two sides of the second limiting groove 211, and two sides of the fourth protruding strip 23 are provided with limiting strips 231, and the limiting strips 231 are slidably matched with the third limiting groove 212. The fourth raised line 23 is pushed, the limit strips 231 on two sides of the fourth raised line 23 slide in the third limit groove 212, and meanwhile, the whole fourth raised line 23 slides in the second limit groove 211 to compress the third spring 22, so that movable connection between the fourth raised line 23 and the main body 21 is realized.

The latch seat 3 of the present embodiment includes a seat body 31, a fourth spring 32, and a shutter 33. The base 31 includes a mounting plate 311 and a base 312. The fourth spring 32 and the shutter 33 are mounted in the seat 312 of the seat 31. The mounting plate 311 of the present embodiment is rectangular, and a first mounting hole 311a having a trapezoid shape is formed in the center of the mounting plate 311. The baffle 33 is disposed outside the first mounting hole 311a and presses the fourth spring 32 against the base 312. One end of the main body 21 passes through the first mounting hole 311a and abuts against the baffle 33, and the fourth protruding strip 23 is engaged with the first mounting hole 311a. The base 312 is fixedly arranged on one side of the mounting plate 311, and the base 312 is fixedly connected with the mounting plate 311 through adhesion. A cylindrical mounting groove 312a is formed in the center of the base 312, and the cylindrical mounting groove 312a is communicated with the first mounting hole 311a and is provided on the outer periphery of the first mounting hole 311a. The base 312 of the present embodiment is cylindrical, and the baffle 33 is a circular plate. The outer diameter of the baffle 33 is the same as the inner diameter of the cylindrical mounting groove 312a, and the diameter of the baffle 33 is greater than the length and width of the first mounting hole 311a. Therefore, the diameter of the baffle plate 33 is larger than the length and the width of the first mounting hole 311a, the baffle plate 33 cannot fall out of the first mounting hole 311a, the baffle plate 33 shields the fourth spring 32 in the cylindrical mounting groove 312a, sundries are effectively prevented from entering, and the structure is attractive. The fourth spring 32 of the present embodiment is a cylindrical compression spring, and the outer diameter of the fourth spring 32 is the same as the inner diameter of the cylindrical mounting groove 312 a. Therefore, the outer diameter of the fourth spring 32 is the same as the inner diameter of the cylindrical mounting groove 312a, and when the baffle 33 compresses the fourth spring 32, the fourth spring 32 contacts with the outer edge of the baffle 33, so that the stress of the fourth spring 32 is more uniform, and the service life is long.

The base 31 is provided with a plurality of third mounting holes 311b, and the third mounting holes 311b are formed therein. The number of the third mounting holes 311b in the present embodiment is 4, and the third mounting holes are provided at four corners of the rectangular mounting plate 311. The mounting screws are inserted into the third mounting holes 311b, so that the fixing of the seat body 31 can be realized, and the fixed mounting of the latch seat 3 can be further realized.

The working principle of the top and bottom bolt device of the embodiment is as follows: after the door and window are closed, the user dials the deflector rod 12 to control the rear cover 14 to move upwards or downwards, so as to push the latch rod connected with the rear cover to move, the latch head 2 connected with the other end of the latch rod is driven to move together, when the latch head 2 is inserted into the latch seat 3, the main body 21 drives the fourth convex strip 23 to press the baffle 33 together, the baffle 33 presses the fourth spring 32, the fourth spring 32 contracts, the baffle 33 is supported by reverse action, two sides of the fourth convex strip 23 can contact two side walls of the first mounting hole 311a while the main body 21 is pressed down, the fourth convex strip 23 is pushed to press the third spring 22, the third spring 22 contracts and acts reversely so that the fourth convex strip 23 is pressed against the side wall of the first mounting hole 311a, the acting force of the third spring 22 and the fourth spring 32 is opposite, the main body 21 of the latch head 2 is firmly fixed by the action of the two, looseness and rotation can not occur, and the use safety is greatly improved.

The latch assembly for doors and windows of the present embodiment further includes a mounting base 4, and the mounting base 4 is provided on the outer periphery of the latch head 2. The mounting seat 4 of the present embodiment is similar to the seat body 31 in structure, and differs in that: the mounting seats 4 are hollow structures and different in size. The inner wall of the mounting seat 4 is provided with a fourth groove 41, and the fourth groove 41 is matched with the fourth convex strip 23. The latch head 2 can be fitted with the latch base 3 through the mounting base 4. The mounting seat 4 is arranged to facilitate the fixing of the latch head 2 and also plays a role in protecting the third spring 22. The fourth groove 41 can effectively prevent the latch head 2 from rotating in the mounting seat 4, so that stability is enhanced. The mounting seat 4 is provided with a plurality of second mounting holes 42, and the second mounting holes 42 are formed. The number of the second mounting holes 42 in the present embodiment is 4, and the second mounting holes are provided at four corners of the mounting base 4. The mounting screws are inserted into the third mounting holes 311b, so that the mounting seat 4 can be fixed, and the fixed mounting of the bolt head 2 can be further realized.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims (6)

1. The bolt mechanism comprises a panel (11), a deflector rod (12) and a bolt rod (5), and is characterized by further comprising a driving frame (13), a rear cover (14) and a gear (15), wherein the deflector rod (12) is arranged on the panel (11) through a rivet (16), one end of the deflector rod (12) penetrates through the panel (11) to be connected with the driving frame (13), the driving frame (13) is slidably arranged on the panel (11), the rear cover (14) is slidably arranged on the driving frame (13), a first rack (131) is arranged on the driving frame (13), a second rack (141) is arranged on the rear cover (14), one end of the gear (15) is fixed on the panel (11), and the other end of the gear is respectively meshed with the first rack (131) and the second rack (141), and the rear cover (14) is connected with the bolt rod (5);

the driving rack (13) is provided with a pin mounting hole (132), the pin (17) is mounted in the pin mounting hole (132), the tail end of the deflector rod (12) is connected with the driving rack (13) through the pin (17), and the distance between the rivet (16) and the head end of the deflector rod (12) is larger than the distance between the rivet (16) and the pin (17);

the driving frame (13) is provided with a first groove (133) and a first raised line (134), the rear cover (14) is provided with a second raised line (142) and a third raised line (143), the panel (11) is provided with a second groove (111), the first raised line (134), the second raised line (142) and the second groove (111) are in sliding fit, and the third raised line (143) and the first groove (133) are in sliding fit;

the locking device (19) is arranged at one end of the panel (11), the locking device (19) comprises an adjusting head (191), a limiting piece (192), a first pressing piece (193) and a first fastening screw (194), a locking device mounting hole (112) is formed in the panel (11), the adjusting head (191) is arranged in the locking device mounting hole (112), the limiting piece (192) is arranged on the adjusting head (191), the first pressing piece (193) is arranged on the limiting piece (192), the first fastening screw (194) sequentially penetrates through the first pressing piece (193), the limiting piece (192) and the adjusting head (191) to be fixedly connected through threads, a stop block (192 a) is arranged on the limiting piece (192), and the stop block (192 a) is matched with the rear cover (14);

the locking device is characterized in that the locking device (19) further comprises a steel ball (195) and a first spring (196), a first mounting groove (113) is formed in the panel (11), the first mounting groove (113) is communicated with the locking device mounting hole (112), the first spring (196) is mounted in the first mounting groove (113), a third groove (191 a) is formed in the adjusting head (191), one end of the steel ball (195) is mounted in the third groove (191 a), and the other end of the steel ball is connected with the first spring (196).

2. The world bolt device, including bolt mechanism (1) according to claim 1, characterized by still including bolt head (2) and bolt seat (3), the one end and the bolt mechanism (1) of bolt head (2) are connected through the bolt pole, and the other end is pegged graft in bolt seat (3), bolt head (2) include main part (21), third spring (22) and fourth sand grip (23), fourth sand grip (23) activity sets up in the both sides of main part (21), fourth sand grip (23) and main part (21) are connected respectively at third spring (22) both ends, bolt seat (3) include pedestal (31), fourth spring (32) and baffle (33) are installed in pedestal (31), first mounting hole (311 a) have been seted up on pedestal (31), baffle (33) set up outside first mounting hole (311 a) and compress tightly fourth spring (32) in pedestal (31), first sand grip (311 a) are passed in the first mounting hole (311 a) and are offset mutually with fourth sand grip (33).

3. The top and bottom latch device according to claim 2, wherein the main body (21) is provided with a second limit groove (211) and a third limit groove (212), the third limit groove (212) is arranged at two sides of the second limit groove (211), the fourth raised line (23) and the third spring (22) are both installed at the second limit groove (211), two sides of the fourth raised line (23) are provided with limit bars (231), and the limit bars (231) are in sliding fit with the third limit groove (212).

4. The top and bottom latch device according to claim 2, wherein the base body (31) comprises a mounting plate (311) and a base (312), the base (312) is fixedly arranged on one side of the mounting plate (311), the first mounting hole (311 a) is formed in the center of the mounting plate (311), the center of the base (312) is provided with a cylindrical mounting groove (312 a), the cylindrical mounting groove (312 a) is communicated with the first mounting hole (311 a) and is formed in the periphery of the first mounting hole (311 a), the fourth spring (32) and the baffle (33) are both arranged in the cylindrical mounting groove (312 a), the baffle (33) is a circular plate, and the outer diameter of the baffle (33) is identical to the inner diameter of the cylindrical mounting groove (312 a).

5. The top and bottom latch arrangement according to claim 4, wherein the fourth spring (32) is a cylindrical compression spring, the outer diameter of the fourth spring (32) being the same as the inner diameter of the cylindrical mounting groove (312 a).

6. The top and bottom bolt device according to claim 2, further comprising a mounting seat (4), wherein the mounting seat (4) is arranged on the periphery of the bolt head (2), the mounting seat (4) is of a hollow structure, and the bolt head (2) is inserted into the bolt seat (3) through the mounting seat (4).