CN218862341U - Spring lock for casement door and window - Google Patents

Abstract

The utility model discloses a spring lock for flat-open door and window, include: the lock box comprises a lock box base body, a lock tongue and a transmission piece, wherein the right side surface of the lock box base body is provided with a lock hole, the lock tongue is movably connected with the lock box base body, the lock tongue can enter and exit the lock hole, the lower end of the lock box base body is provided with a first opening, the lower end of the transmission piece penetrates through the first opening, the transmission piece can slide up and down relative to the lock box base body, the upper end of the transmission piece is provided with a first clamping block which gradually extends upwards from left to right, the left end of the lock tongue is provided with a first groove, the first groove is in adaptive connection with the transmission piece, and the first clamping block can enter and exit the first groove; the lock body comprises a lock body and a handle, and the handle is movably connected with the lock body; the handle is in transmission connection with the transmission part to be used for driving the transmission part to ascend, and unlocking or locking of the latch lock for the casement door and window is achieved through ascending and descending of the transmission part.

Description

Spring lock for casement door and window

Technical Field

The utility model relates to a door and window accessory technical field, in particular to a spring lock for flat-open door and window.

Background

In the field of building doors and windows, two sash bodies or sash bodies and a frame body of a casement door and window need to be locked and fixed so as to keep the closing state of the door and window.

However, the existing window lock or door lock is complex and large in structure, and when the existing window lock or door lock is applied to some light and thin doors and windows, the problem that the lock body is large and unattractive is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

The utility model provides a spring lock for flat-open door and window, include, lock the box, it includes lock box base member, spring bolt and driving medium, set up and hold the chamber in the lock box base member, the right flank of lock box base member is equipped with the lockhole, the lockhole communicates with holding the chamber, spring bolt and lock box base member swing joint, the spring bolt can pass in and out the lockhole, the lower extreme of lock box base member is equipped with first opening, first opening and holding the chamber intercommunication, the lower extreme of driving medium passes first opening, the driving medium can slide from top to bottom relative to lock box base member, the upper end of driving medium is equipped with the first fixture block that extends upwards gradually from left to right, the left end of spring bolt sets up first recess, first recess and driving medium adapter coupling, first fixture block can pass in and out first recess; the lock body comprises a lock body and a handle, wherein the handle is movably connected with the lock body; the handle is in transmission connection with the transmission piece and is used for driving the transmission piece to ascend.

According to the utility model provides a latch lock for flat-open door and window has following beneficial effect at least: when the spring lock is used, a user can enable the handle to be abutted with the lower end of the transmission piece through lifting or rotating of the handle, so that the transmission piece is driven to ascend, the upper end of the transmission piece is provided with a first clamping block which gradually extends upwards from left to right, the left side surface of the spring bolt is provided with a first groove, the shape and the size of the first groove are in adaptive connection with the transmission piece, in the process of gradually ascending of the transmission piece, the upper end of the first clamping block is abutted with the inner surface of the first groove, the first clamping block is gradually clamped into the first groove, and the spring bolt moves leftwards due to the fact that the first clamping block is limited to move in the vertical direction, and the spring bolt is retracted into the lock hole, so that unlocking of the spring lock for the casement door and window is achieved; and after the user loosened the handle, the driving medium moved down under self action of gravity, and first fixture block withdrawed from first recess, and the lockhole was stretched out to the spring bolt, and this a spring lock structure for flat-open door and window passes through the lift of driving medium, can realize this a unblock or closure that is used for the spring lock of flat-open door and window, simple structure, convenient operation, applicable in comparatively frivolous door and window to avoid the huge, the unattractive problem of lock body to appear.

According to some embodiments of the utility model, the lock box still includes first boss, and first boss setting is on the left surface that holds the chamber, and the left surface of driving medium is equipped with the second recess that extends from top to bottom, and first boss card is established in the second recess.

The lock box still includes first boss, first boss sets up on the left surface that holds the chamber, the left surface of driving medium is equipped with the second recess that extends from top to bottom that is, at the in-process that the relative lock box base member of driving medium goes up and down, the left surface of driving medium and the left surface laminating that holds the chamber, and first boss card is established in the second recess, being provided with of first boss does benefit to the removal that the restriction driving medium went forward or backward, be favorable to guaranteeing the removal of driving medium in the upper and lower side, thereby realize first fixture block and first groove connection or separation, and then realize this a closure or the unblock that is used for flat-open door and window's latch.

According to some embodiments of the present invention, the rear end surface of the lock case base is provided with a guide hole extending vertically, the first groove is communicated with the rear end surface of the lock tongue, and the rear end of the driving member is provided with a guide post; the guide post is clamped in the guide hole and can slide up and down along the guide hole.

The rear end face of lock box base member is equipped with the guiding hole that extends from top to bottom, the rear end face intercommunication of first recess and spring bolt, the rear end of driving medium is equipped with the guide post, at the in-process that the relative lock box base member of driving medium goes up and down, the guide post card is established in the guiding hole, and can slide from top to bottom along the guiding hole, the setting of guide post and guiding hole is favorable to restricting the ascending removal of driving medium in the left and right sides direction, be favorable to guaranteeing the ascending removal in upper and lower direction of driving medium, thereby realize first fixture block and first groove connection or separation, and then realize this a closure or the unblock that is used for flat-open door and window's spring lock.

According to some embodiments of the present invention, the front end face and the rear end face of the lock case base are both provided with guide holes, the driving member is provided with first through holes extending forward and backward, the guide posts are arranged by passing through the first through holes, and the front end face of the lock tongue is provided with a second through hole; the second through hole is communicated with the first groove so as to be penetrated by the guide post.

The preceding terminal surface and the rear end face of lock box base member all are equipped with the guiding hole, the first through-hole that extends around the driving medium is equipped with, the guide post passes first through-hole setting, the rear end face intercommunication of first recess and spring bolt, be favorable to realizing the equipment of first recess and driving medium, the preceding terminal surface of spring bolt is equipped with the second through-hole, second through-hole and first recess intercommunication, pass with for the guide post, both ends are located two guiding holes around respectively around the guide post, through guiding hole and guide post complex form, be favorable to guaranteeing the ascending removal in upper and lower direction of driving medium, thereby realize first fixture block and first groove connection or separation, and then realize this locking or unblock of the spring-lock for flat-open door and window.

According to the utility model discloses a some embodiments, lock box still includes first reset spring, and first reset spring sets up and is holding the intracavity, and first reset spring's one end is connected with lock box base member, and the other end is connected with the left surface of spring bolt.

The lock box still includes first reset spring, first reset spring sets up and is holding the intracavity, first reset spring's one end and lock box base member are connected, the other end is connected with the left surface of spring bolt, after spring bolt and lock seat butt, spring bolt extrusion first reset spring contracts in the lockhole, after the lockhole on spring bolt and the lock seat is relative, disappear at the extrusion force of lock seat to the spring bolt, under first reset spring's effect, the spring bolt stretches out the lockhole automatically, and with the cooperation of the lock seat hole on the lock seat, thereby realize this a function that is used for the automatic spring lock of casement window and door's spring lock, satisfy the user demand of this casement window and door spring lock.

According to some embodiments of the utility model, first reset spring sets up two, and two first reset springs are connected with the upper end and the lower extreme of spring bolt respectively, and first reset spring arranges around being with the driving medium.

First reset spring sets up two, two first reset spring are connected with the upper end and the lower extreme of spring bolt respectively, being provided with of two first reset spring does benefit to the flexible comparatively steady that makes the spring bolt, and is reliable, satisfy this a spring lock's that is used for flat-open door and window user demand, and first reset spring arranges around being with the driving medium, the form of arranging around being favorable to avoiding first reset spring's setting to produce the lift of driving medium and interfere, satisfy this a spring lock closure and the user demand of unblock that is used for flat-open door and window.

According to some embodiments of the present invention, the front end surface of the lock body is provided with a third groove opening forward; the handle sets up in the third recess, and the left end and the right-hand member of handle rotate with the left surface and the right flank of third recess respectively and are connected.

The front end face of the lock body is provided with a third groove which is opened forwards, the handle is arranged in the third groove, the left end and the right end of the handle are respectively and rotatably connected with the left side face and the right side face of the third groove, namely the handle can rotate around an axis extending left and right, and the locking and unlocking of the latch lock for the casement door and window are realized through the rotation of the handle; the handle is arranged in the third groove, which is beneficial to realizing the hidden installation of the handle, thereby avoiding the problem that the traditional rotating handle parallel to the door body or the window body is easy to cause the unevenness or the abrupt matching of the curtain when being matched with the curtain.

According to some embodiments of the present invention, a driving block is disposed at the rear end of the handle, a second opening is disposed on the rear end surface of the third groove, and the driving block passes through the second opening; the driving block can be abutted against the transmission member to drive the transmission member to ascend.

The rear end of handle is provided with the drive block, the rear end face of third recess sets up the second opening, the drive block passes the setting of second opening, in user turning handle's in-process, the drive block rotates along with the handle, can rotate the lower extreme butt with the driving medium after certain angle at the drive block, thereby drive the rising of driving medium, and then realize the linkage of driving medium and spring bolt, make in the spring bolt retraction lockhole, accomplish the separation of the fan body or the framework of spring bolt and peripheral hardware, through the setting of drive block and driving medium, can turn into the flexible of spring bolt with the rotation of handle, be favorable to simplifying the structure of lock body, make this a structure for flat-open door and window's latch more simple, reliable.

According to some embodiments of the present invention, the lock body further comprises a buffer block, a second return spring and a rotating shaft extending left and right, the rotating shaft is disposed in the third groove, and the lower end of the handle is rotatably connected to the rotating shaft; the buffer block is arranged on the rear end face of the third groove and is positioned above the rotating shaft; one end of the second reset spring is connected with the handle, the other end of the second reset spring is connected with the rear end face of the third groove, and the second reset spring is arranged below the rotating shaft.

The lock body still includes the buffer block, the pivot of extension about second reset spring and, the pivot sets up in the third recess, the lower tip of handle rotates with the pivot to be connected, the portion of gripping of handle can be regarded as to the upper end of handle promptly, the user is through the outside handle that rotates, can realize the drive block upwards rotates and drive the function that the driving medium rises, the buffer block sets up the top in the pivot, and second reset spring sets up the below in the pivot, after the user loosens the handle, under second reset spring's effect, the inside rotation automatic re-setting of handle, the setting of buffer block is favorable to absorbing the inertial force of handle striking lock body, be favorable to reducing the risk of handle or lock body damage, be favorable to increasing the durability of this a latch lock for flat-open door and window.

According to some embodiments of the present invention, the lock body further includes a second fixture block and a safety rotation shaft extending forward and backward, the front end surface of the lock body is provided with a third through hole, the safety rotation shaft is rotatably connected to the third through hole, a fourth groove is formed on the periphery of the lower end portion of the third groove, the fourth groove is communicated with the third groove, and the second fixture block is disposed in the fourth groove; the safety rotating shaft is in transmission connection with the second clamping block so as to drive the second clamping block to be screwed into the third groove to limit the rotation of the handle.

The lock body still includes the insurance pivot of second fixture block and fore-and-aft extension, the insurance pivot rotates with the third through hole that sets up on the lock body to be connected, the insurance pivot can cooperate the key to use, insert the insurance pivot with the key after, the insurance pivot can be rotated, the insurance pivot is connected with the transmission of second fixture block, with the lower extreme of drive second fixture block back-out fourth recess and screw in third recess, thereby the outside rotation of restriction handle, the unblock of latch lock is realized to the unable twist grip of user, thereby realize this an insurance function that is used for the latch lock of flat-open door and window.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a latch lock for a casement door and window in a locked state according to an embodiment of the present invention;

fig. 2 is a schematic view of a three-dimensional structure of a latch lock for a casement door and window in an unlocked state provided by an embodiment of the present invention;

fig. 3 is a schematic perspective view of a lock body of a latch lock for a casement door and window according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a lock box of a latch lock for a side hung door and window provided in an embodiment of the present invention;

fig. 5 is an exploded schematic view of a lock body of a latch for a casement door and window according to an embodiment of the present invention;

fig. 6 is an explosion structure diagram of a lock box of a latch lock for a casement door and window provided by an embodiment of the present invention;

fig. 7 is a schematic perspective view of a latch lock (omitting part of the lock body and the lock box) for a casement door and window in an unlocked state according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a latch lock (omitting part of the lock body and the lock box) for a casement door and window in a locked state according to an embodiment of the present invention.

In the drawings: 100. a lock case; 110. a lock case base; 111. a lock hole; 112. a first boss; 113. a guide hole; 120. a latch bolt; 121. a second through hole; 122. a first groove; 130. a transmission member; 131. a guide post; 132. a first through hole; 133. a second groove; 134. a first clamping block; 140. a first return spring; 200. a lock body; 210. a lock body; 211. a third groove; 212. a third through hole; 220. a handle; 230. a drive block; 240. a buffer block; 250. a second return spring; 260. a rotating shaft; 270. a safety rotating shaft; 280. a second fixture block; 300. a lock seat.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

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

In the description of the present invention, a plurality of terms means an indefinite amount, and a plurality of terms means two or more, and the terms larger than, smaller than, larger than, or the like are understood as not including the term, and the terms larger than, smaller than, or the like are understood as including the term. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. Additionally, appearing throughout and/or representing three side-by-side scenarios, e.g., A and/or B represents a scenario satisfied by A, a scenario satisfied by B, or a scenario satisfied by both A and B.

In the description of the present invention, if there is a phrase containing a plurality of parallel features, the phrase defined therein is the closest feature, for example: b and C arranged on A, and E connected with D, wherein B is arranged on A, and E is connected with D, and C is not limited; however, the terms indicating the relationship between the features, such as "spaced apart", "arranged in a ring", etc., do not fall within this category. If the phrase is preceded by the word "mean", it means that all the features in the phrase are limited, and if B, C and D are all arranged on A, it means that B, C and D are all arranged on A.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Embodiments of the present invention will be described with reference to fig. 1 to 8.

Embodiment one, refer to fig. 1-4, the embodiment of the utility model provides a latch for flat-open door and window includes: lock box 100, lock body 200, and lock holder 300.

Specifically, the lock box 100 and the lock body 200 are connected to a door leaf or a window sash, and the lock holder 300 is disposed on another door leaf or a frame body, so that the locking and unlocking of the flat-open type automatic latch lock are realized through the cooperation of the lock box 100 and the lock holder 300. The lock box 100 and the lock body 200 can be independently arranged, and the split type arrangement of the lock box 100 and the lock body 200 is favorable for realizing the installation and the disassembly of the lock box 100 and the lock body 200 and an external door leaf or window sash, so that the touch lock for the casement door and window has wider applicability. In other embodiments of the present invention, the lock case 100 and the lock body 200 can be assembled as a whole, such as being nested together.

Referring to fig. 4 and 6, the lock box 100 includes a first return spring 140, a lock box base 110, a lock tongue 120 and a transmission member 130, a containing cavity is provided in the lock box base 110, the containing cavity provides a containing space for arrangement of the lock tongue 120, the transmission member 130, the first return spring 140 and other components, a lock hole 111 is provided on the right side surface of the lock box base 110, the lock tongue 120 is slidably connected with the lock box base 110, the lock tongue 120 can enter and exit the lock tongue 120, so as to be matched with a lock seat hole provided on the lock seat 300, and locking and unlocking of the latch lock for the casement window and door are achieved.

The receiving cavity is shaped and sized to fit the latch tongue 120, thereby allowing the latch tongue 120 to move in the left-right direction. The first return spring 140 is disposed in the accommodating cavity, one end of the first return spring 140 is connected to the lock case base 110, and the other end is connected to the left side surface of the locking tongue 120.

The lower extreme of lock box base member 110 is equipped with first opening, first opening with hold the chamber intercommunication, the lower extreme of driving medium 130 passes first opening and is located the below of lock box base member 110, driving medium 130 can slide from top to bottom relative lock box base member 110, and the upper end of driving medium 130 is equipped with from a left side to turn right first fixture block 134 that upwards extends gradually, the left end of spring bolt 120 is equipped with first recess 122, first recess 122 and driving medium 130 adaptation are connected, first fixture block 134 can pass in and out first recess 122.

First fixture block 134 upper end is for turning right the first slope section that upwards sets up from a left side, the upper end of first recess 122 sets up to turning right the second slope section that upwards sets up of slope from a left side, in driving medium 130 rising in-process, first fixture block 134 and the spring bolt 120 butt of driving medium 130 upper end, first slope section and the cooperation of second slope section, and driving medium 130 is restricted and is moved in the upper and lower direction, first fixture block 134 blocks gradually in first recess 122, make spring bolt 120 move left, until spring bolt 120 retracts completely in lockhole 111, namely spring bolt 120 withdraws from the lock seat hole of lock seat 300, realize lock box 100 and the separation of lock seat 300, should be used for the unblock of flat-open door and window's latch promptly.

It should be noted that, an arc section which is gradually bent upwards may also be disposed at the upper end of the first block 134, and the shape of the first block 134 needs to meet the requirement that the driving member 130 can be gradually clamped into the first groove 122 in the ascending process, so that the locking tongue 120 moves leftward. The shape and size of the first recess 122 are required to be adapted to the first latch 134, and the first latch 134 is kept in contact with the first latch 134 during the ascending process of the transmission member 130, so that the first latch 134 can enter and exit the first recess 122.

Referring to fig. 3 and 5, the lock body 200 includes a lock body 210 and a handle 220, the handle 220 is movably connected to the lock body 210, for example, the handle 220 can rotate around an axis extending from left to right, and the handle 220 abuts against the transmission member 130, so as to drive the transmission member 130 to ascend. In some other embodiments of the present invention, the handle 220 can slide up and down relative to the lock body 210, and the handle 220 abuts against the lower end of the transmission member 130, so that the transmission member 130 can be driven to ascend.

Referring to fig. 7 and 8, in the using process, when a user needs to close the door body or the window body, the door body or the window body can be driven to rotate by the holding handle 220, so that the latch bolt 120 abuts against the lock base 300, under the extrusion of the lock base 300, the latch bolt 120 compresses the first return spring 140 and retracts into the lock hole 111, after the latch bolt 120 is opposite to the lock base hole on the lock base 300, the extrusion force of the lock base 300 on the latch bolt 120 disappears, and under the action of the first return spring 140, the latch bolt 120 automatically extends out of the lock hole 111 and is inserted into the lock base hole on the lock base 300, so that the function of the automatic latch lock of the latch lock for the casement window and door is realized, and the use requirements of the latch lock for the casement window and door and window are met.

When a user needs to open the door body or the window body, the driving member 130 can be driven to ascend by rotating or lifting the handle 220, the driving member 130 is matched with the first groove 122 through the first fixture block 134 in the ascending process, so that the driving member 130 is linked with the lock tongue 120, the lock tongue 120 moves leftwards, the lock tongue 120 exits from the lock seat hole in the lock seat 300, the door body or the window body is unlocked with another fan body or the frame body, and the unlocking function of the latch lock for the casement door and window is realized.

Further preferably, in order to ensure that the transmission member 130 moves in the up-down direction, the lock box 100 further includes a first boss 112, the first boss 112 is disposed on the left side surface of the accommodating cavity, the left side surface of the transmission member 130 is provided with a second groove 133 extending up and down, and the first boss 112 is clamped in the second groove 133, the first boss 112 is disposed to facilitate limiting the movement of the transmission member 130 in the front-back direction, so as to ensure the movement of the transmission member 130 in the up-down direction, thereby realizing the connection or separation of the first clamping block 134 and the first groove 122, and further realizing the locking or unlocking of the latch lock for the casement door and window.

When the first projection 112 abuts against the upper end or the lower end of the second recess 133, the limit distance of the ascending and descending of the transmission member 130 is limited, which is advantageous for maintaining the engagement of the transmission member 130 with the lock case base 110.

It should be noted that the transmission member 130 may be rod-shaped or sheet-shaped, and the length and shape of the transmission member 130 only satisfy the requirement of being capable of matching with the first groove 122 and being capable of relatively lifting with respect to the lock box base 110.

Further preferably, the rear end surface of the lock case base 110 is provided with a guide hole 113 extending vertically, the first groove 122 is communicated with the rear end surface of the bolt 120, and the rear end of the transmission member 130 is provided with a guide post 131; the guide post 131 is clamped in the guide hole 113 and can slide up and down along the guide hole 113, in the process that the transmission member 130 goes up and down relative to the lock box base body 110, the guide post 131 is clamped in the guide hole 113 and can slide up and down along the guide hole 113, the arrangement of the guide post 131 and the guide hole 113 is favorable for limiting the movement of the transmission member 130 in the left-right direction, so that the movement of the transmission member 130 in the up-down direction is ensured, the connection or separation of the first clamping block 134 and the first groove 122 is realized, and the locking or unlocking of the latch lock for the casement door and window is realized.

Specifically, the front end face and the rear end face of the lock box base body 110 are both provided with the guide holes 113, the transmission member 130 is provided with a first through hole 132 extending from front to back, the guide post 131 passes through the first through hole 132, the first groove 122 is communicated with the rear end face of the lock tongue 120, the first groove 122 is favorably connected with the transmission member 130 in a matched manner, the front end face of the lock tongue 120 is provided with the second through hole 121, the second through hole 121 is communicated with the first groove 122 for the guide post 131 to penetrate, the front end and the rear end of the guide post 131 are respectively located in the front guide hole 113 and the rear guide hole 113, and the guide holes 113 and the guide post 131 are matched to favorably ensure the movement of the transmission member 130 in the up-and-down direction, so that the first clamping block 134 is connected with or separated from the first groove 122, and the locking or unlocking of the touch lock for the side-hung door and window is realized.

Further preferably, first reset spring 140 sets up two, two first reset springs 140 are connected with the upper end and the lower extreme of spring bolt 120 respectively, being provided with of two first reset springs 140 does benefit to and makes the flexible comparatively steady, reliable of spring bolt 120, satisfy this a user demand for flat-open door and window's latch lock, and first reset spring 140 arranges around being with driving medium 130, the form of arranging around being favorable to avoiding first reset spring 140's setting to produce the interference to the lift of driving medium 130, satisfy this a user demand for flat-open door and window's latch lock closure and unblock.

Further preferably, the front end face of the lock body 210 is provided with a third groove 211 which is open forward, the handle 220 is arranged in the third groove 211, the left end and the right end of the handle 220 are respectively connected with the left side face and the right side face of the third groove 211 in a rotating manner, namely, the handle 220 can rotate around an axis which extends left and right, and the use requirements of locking and unlocking the latch lock for the casement door and window can be met.

When the traditional rotating handle parallel to the door body or the window body is matched with a curtain, the arrangement of the curtain is easily obstructed, so that the curtain is uneven and unattractive, and the problem that the matching of the curtain and the curtain is more abrupt is caused. And this a handle 220 that is used for flat-open door and window's latch lock sets up in third recess 211, is favorable to realizing the hidden installation of handle 220, is favorable to avoiding handle 220 and (window) curtain contact, can be convenient for arrange of (window) curtain, guarantees indoor whole aesthetic property.

Further preferably, the rear end of the handle 220 is provided with a driving block 230, the rear end face of the third groove 211 is provided with a second opening, the driving block 230 passes through the second opening, in the process that the user rotates the handle 220, the driving block 230 rotates along with the handle 220, the driving block 230 rotates to a certain angle and then can be abutted against the lower end of the transmission member 130, so as to drive the transmission member 130 to ascend, thereby realizing the linkage of the transmission member 130 and the lock tongue 120, so that the lock tongue 120 retracts into the lock hole 111, and the separation of the lock tongue 120 from a peripheral fan body or frame body is completed, through the setting of the driving block 230 and the transmission member 130, the rotation of the handle 220 can be converted into the expansion and contraction of the lock tongue 120, which is beneficial to making the latch structure simpler and more reliable.

Specifically, the driving block 230 sets up downwards from the past backward slope, can be so that the driving block 230 keeps with the butt of driving medium 130, be favorable to increasing the stroke that driving block 230 can drive driving medium 130 and rise to applicable in the different user demand of the spring bolt 120 of various flexible lengths, be favorable to increasing this a user demand for flat-open door and window's latch lock.

Further preferably, the lock body 200 further includes a buffer block 240, a second return spring 250 and a rotating shaft 260 extending left and right, the rotating shaft 260 is disposed in the third recess 211, the lower end of the handle 220 is rotatably connected to the rotating shaft 260, that is, the upper end of the handle 220 can be used as a holding portion of the handle 220, and a user can rotate the handle 220 outward to realize the upward rotation of the driving block 230, and further to drive the transmission member 130 to ascend.

The buffer block 240 is arranged on the rear end face of the third groove 211 and is located above the rotating shaft 260; one end of the second return spring 250 is connected to the handle 220, the other end is connected to the rear end surface of the third groove 211, and the second return spring 250 is disposed below the rotating shaft 260.

After the user loosens handle 220, under the effect of second reset spring 250, handle 220 inwards rotates automatic re-setting, and buffer block 240 is provided with and is favorable to absorbing the inertia force that handle 220 strikeed lock body 210, is favorable to reducing the risk that handle 220 or lock body 200 damaged, is favorable to increasing this a durability that is used for flat-open door and window's latch lock.

It should be noted that the buffer block 240 may be made of sponge, rubber, or silica gel, which has a better buffering performance.

Further preferably, the lock body 200 further includes a second latch 280 and a safety rotating shaft 270 extending forward and backward, a third through hole 212 is formed in the front end surface of the lock body 210, the safety rotating shaft 270 is rotatably connected to the third through hole 212, the safety rotating shaft 270 can be used in cooperation with a key, and after the key is inserted into the safety rotating shaft 270, the safety rotating shaft 270 can be rotated to drive the second latch 280 to rotate.

A fourth groove is formed in the periphery of the lower end portion of the third groove 211, the fourth groove is communicated with the third groove 211, and the second fixture block 280 is arranged in the fourth groove; the safety rotation shaft 270 is in transmission connection with the second latch 280 to drive the second latch 280 to be screwed into the third recess 211 to limit the rotation of the handle 220.

When the second latch 280 is not in use, it can be received in the fourth groove, and when the second latch 280 is driven by the safety rotating shaft 270, it can be screwed out of the fourth groove and into the lower end of the third groove 211, and abuts against the handle 220, at this moment, the user cannot rotate the handle 220 outwards to unlock, so as to implement the safety function of the latch lock of the sliding door and window.

Specifically, the rear end of the safety rotating shaft 270 is provided with a polygonal boss, such as a triangle, a quadrangle, a hexagon and the like, the second fixture block 280 is provided with a transmission hole, the transmission hole is provided with a shape matched with the safety rotating shaft 270, such as a triangle, a quadrangle or a hexagon, the safety rotating shaft 270 is inserted into the transmission hole of the second fixture block 280 and then can be fixed by a screw, so that the safety rotating shaft 270 is in transmission connection with the second fixture block 280, when a user inserts a key into the safety rotating shaft 270, the safety rotating shaft 270 is rotated, the second fixture block 280 is further driven to rotate, the second fixture block 280 is screwed into the third groove 211 and is abutted against the handle 220, and thus the safety function of the push-pull door and window latch is realized.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are to be included within the scope of the present invention defined by the appended claims.

Claims (10)

1. The utility model provides a spring lock for flat-open door and window which characterized in that includes:

the lock box (100) comprises a lock box (100) base body, a lock tongue (120) and a transmission piece (130), a containing cavity is arranged in the lock box (100) base body, a lock hole (111) is formed in the right side face of the lock box (100) base body, the lock hole (111) is communicated with the containing cavity, the lock tongue (120) is movably connected with the lock box (100) base body, the lock tongue (120) can enter and exit the lock hole (111), a first opening is formed in the lower end of the lock box (100) base body and is communicated with the containing cavity, the lower end of the transmission piece (130) penetrates through the first opening, the transmission piece (130) can slide up and down relative to the lock box (100) base body, a first clamping block (134) extending upwards gradually from left to right is arranged at the upper end of the transmission piece (130), a first groove (122) is formed in the left end of the lock tongue (120), the first groove (122) is in adaptive connection with the transmission piece (130), and the first clamping block (134) can enter and exit the first groove (122);

the lock body (200) comprises a lock body (200) body and a handle (220), wherein the handle (220) is movably connected with the lock body (200) body; the handle (220) is in transmission connection with the transmission piece (130) and is used for driving the transmission piece (130) to ascend.

2. The latch lock for casement windows and doors according to claim 1, wherein the lock case (100) further comprises a first boss (112), the first boss (112) is disposed on the left side surface of the accommodating cavity, a second groove (133) extending up and down is disposed on the left side surface of the transmission member (130), and the first boss (112) is clamped in the second groove (133).

3. The latch lock for casement windows and doors according to claim 2, wherein the rear end face of the base of the lock case (100) is provided with a guide hole (113) extending vertically, the first groove (122) is communicated with the rear end face of the lock tongue (120), and the rear end of the transmission member (130) is provided with a guide post (131); the guide post (131) is clamped in the guide hole (113) and can slide up and down along the guide hole (113).

4. The latch for casement windows and doors according to claim 3, wherein the guide hole (113) is formed in each of the front and rear end surfaces of the base of the lock case (100), the transmission member (130) is provided with a first through hole (132) extending forward and backward, the guide post (131) is disposed through the first through hole (132), and the second through hole (121) is formed in the front end surface of the latch tongue (120); the second through hole (121) is communicated with the first groove (122) to allow the guide post (131) to pass through.

5. The latch for casement windows and doors according to claim 4, wherein the lock case (100) further comprises a first return spring (140), the first return spring (140) is disposed in the accommodating cavity, one end of the first return spring (140) is connected to the base of the lock case (100), and the other end is connected to the left side surface of the latch tongue (120).

6. The latch for casement windows and doors according to claim 5, wherein there are two first return springs (140), two first return springs (140) are connected to the upper end and the lower end of the latch tongue (120), respectively, and the first return springs (140) and the transmission member (130) are arranged in the front-back direction.

7. The latch for casement windows and doors according to claim 1, wherein the front face of the body of the lock body (200) is provided with a third recess (211) opening forward; the handle (220) is arranged in the third groove (211), and the left end and the right end of the handle (220) are respectively connected with the left side surface and the right side surface of the third groove (211) in a rotating mode.

8. The latch for casement windows and doors according to claim 7, wherein a driving block (230) is provided at the rear end of the handle (220), a second opening is provided at the rear end surface of the third groove (211), and the driving block (230) is provided through the second opening; the driving block (230) can be abutted against the transmission piece (130) to drive the transmission piece (130) to ascend.

9. The latch for casement windows and doors according to claim 8, wherein the lock body (200) further comprises a buffer block (240), a second return spring (250) and a rotating shaft (260) extending left and right, the rotating shaft (260) is arranged in the third groove (211), and the lower end of the handle (220) is rotatably connected with the rotating shaft (260); the buffer block (240) is arranged on the rear end face of the third groove (211) and is positioned above the rotating shaft (260); one end of the second return spring (250) is connected with the handle (220), the other end of the second return spring is connected with the rear end face of the third groove (211), and the second return spring (250) is arranged below the rotating shaft (260).

10. The latch for casement windows and doors according to claim 9, wherein the lock body (200) further comprises a second latch block (280) and safety rotating shafts (270) (260) extending back and forth, a third through hole (212) is formed in the front end surface of the body of the lock body (200), the safety rotating shafts (270) (260) are rotatably connected with the third through hole (212), a fourth groove is formed in the periphery of the lower end of the third groove (211), the fourth groove is communicated with the third groove (211), and the second latch block (280) is arranged in the fourth groove; the safety rotating shaft (270) (260) is in transmission connection with the second clamping block (280) so as to drive the second clamping block (280) to be screwed into the third groove (211) to limit the rotation of the handle (220).

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