阅读说明：本技术 水平限位门碰对 (Horizontal limit door stop pair ) 是由 林旭文 于 2020-07-24 设计创作，主要内容包括：水平限位门碰对,包括限位座和用于沿水平方向碰触限位座的碰头；其特征在于,限位座包括座体、碰撞基体、第一复位弹簧、缓冲基体和第二复位弹簧,碰头包括用于碰触碰撞基体和缓冲基体的碰头臂；由于限位座包括有能够沿上下方向移动的碰撞基体以及能够驱动碰撞基体向上复位的第一复位弹簧,还包括有能够沿左右方向移动的缓冲基体以及能够驱动碰撞基体向右复位的第二复位弹簧,为此能够借助于碰撞基体、缓冲基体实现对碰头臂的定位,让碰头臂不能随意移动离开,又能借助于缓冲基体及其第二复位弹簧实现缓冲,缓和和释放开门的动能,从而不仅简化了产品结构而且降低了产品开门碰撞的振动和噪音。(The horizontal limit door knob pair comprises a limit seat and a knob used for touching the limit seat along the horizontal direction; the collision head comprises a collision base body, a first return spring, a buffer base body and a second return spring, wherein the collision head comprises a collision head arm used for contacting the collision base body and the buffer base body; because spacing seat is including the collision base member that can follow the upper and lower direction and can drive the first reset spring that the collision base member upwards resets, still including the buffering base member that can follow left and right direction and can drive the second reset spring that the collision base member resets right, can be with the help of the collision base member for this reason, the buffering base member realizes the location to the trip arm, let the trip arm can not remove at will and leave, can realize the buffering with the help of buffering base member and second reset spring again, alleviate and release the kinetic energy of opening the door, thereby not only simplified the product structure but also reduced the product and opened the vibration and the noise of door collision.)

1. The horizontal limiting door knob pair comprises a limiting seat and a knob for touching the limiting seat along the horizontal direction; the collision head comprises a collision base body, a first return spring, a buffer base body and a second return spring, wherein the collision head comprises a collision head arm used for contacting the collision base body and the buffer base body; the collision base body is movably arranged on the seat body along the up-down direction, the first return spring is arranged on the seat body and used for driving the collision base body to reset upwards, the buffer base body is movably arranged on the seat body along the left-right direction, and the second return spring is arranged on the seat body and used for driving the buffer base body to reset rightwards; the collision base body is used for being pushed by the collision head arm to move downwards when the collision head arm moves across the head top of the collision head arm along the horizontal direction so as to avoid the collision head arm, the buffering base body is used for being pushed by the collision head arm to move leftwards when the collision head arm moves along the horizontal direction towards the left and providing reverse buffering for the collision head arm in the process of being pushed leftwards, and the buffering base body is also used for being cooperated with the collision base body to limit that the collision head arm cannot move randomly after at least part of the collision head arm moves across the head top of the collision base body along the horizontal direction.

2. The pair of horizontal limit door bolts of claim 1, wherein the right end of the cushion base is capable of extending to contact or be capable of extending above the impact base when the cushion base is in a free state.

3. The pair of horizontal limit door bolts as claimed in claim 1, wherein the limit seat further comprises a limit structure for limiting the stroke of the cushion base moving leftward or rightward.

4. The pair of horizontal limit door stoppers as claimed in claim 3, wherein the limit structure comprises a limit arm disposed on the base and a first vertical arm disposed at the left end of the damping base, the first vertical arm being located at the left side of the limit arm, and when the damping base moves to the right, the limit arm is used to limit the movement of the first vertical arm to the right, thereby limiting the movement of the damping base to the right.

5. The pair of horizontal limit door strikes according to claim 4, wherein the second return spring is disposed horizontally on the left side of the first upright arm and serves to apply a rightward driving force to the first upright arm.

6. The pair of horizontal limit door stoppers as claimed in claim 3, wherein the limit structure comprises a limit arm disposed on the base and a second vertical arm disposed at the right end of the buffer base, the second vertical arm being located at the right side of the limit arm, and when the buffer base moves to the left, the limit arm is used to limit the stroke of the second vertical arm moving to the left, thereby limiting the stroke of the buffer base moving to the left.

7. The pair of horizontal limit door stoppers as claimed in claim 4, 5 or 6, wherein the base comprises a main seat and a cover covering the main seat, the main seat is provided with a first limit arm extending upward, the cover is provided with a second limit arm extending downward, the first limit arm and the second limit arm together form the limit arm, and the buffer base is disposed between the first limit arm and the second limit arm.

8. The pair of horizontal limit door bolts as claimed in any one of claims 1 to 6, wherein the right side of the base body is provided with an open limit cavity, the collision base is disposed in the limit cavity, and the wall of the limit cavity does not prevent the lower end of the head arm from entering the limit cavity along the horizontal direction and touching the collision base.

9. The pair of horizontally-limited door strikes according to any one of claims 1 to 6, wherein the strike head further comprises a strike head base for attachment to a door leaf and a mounting arm attached to the mounting arm, the mounting arm being attached to the strike head base; the collision head base is provided with a third reset spring and a guide rod which is arranged along the vertical direction, the collision head base is provided with an extension arm which extends out along the horizontal direction, the extension arm is provided with a screw rod through hole, the guide rod comprises a threaded rod body part and a rod body head part, and the outer diameter of the rod body head part is larger than the inner diameter of the screw rod through hole; be provided with on the installation arm with the screw hole of screw rod body portion looks adaptation, the threaded rod body portion of guide arm passes from last down male mode connect again behind screw rod through-hole, the third reset spring in the screw hole of installation arm, the third reset spring suit is in on the guide arm and be located the extension arm with between the installation arm, thereby let the installation arm can for when receiving external force and assault the meeting head seat reciprocates, and can adjust through the rotation the installation arm for the upper and lower position of meeting head seat.

10. The pair of horizontal limit door bolts as claimed in any one of claims 1 to 6, wherein the base body is provided with a pair of horizontal guide grooves, the front and rear ends of the buffer base body are provided with buffer guide portions, and the buffer guide portions are disposed in the horizontal guide grooves and can move horizontally along the horizontal guide grooves.

11. The pair of horizontal limit door bolts as claimed in any one of claims 1 to 6, wherein the base body is provided with a pair of vertical guide grooves, and collision guide portions are provided at front and rear ends of the collision base body, the collision guide portions being disposed in the vertical guide grooves and being capable of ascending and descending along the vertical guide grooves.

Technical Field

The invention relates to the technical field of door stoppers, in particular to a door stopper pair with horizontal limiting. The door knob is to including spacing seat and being used for following the horizontal direction and touching the head of bumping of spacing seat, works as the head of bumping is touched along the horizontal direction can be fixed a position when spacing seat is last. In practical use, the limit seat is generally installed on a fixed building such as a ground or a wall, and the collision head is generally installed on the inner side surface of the door leaf.

Background

In order to prevent the door from being blown by wind or being touched randomly to cause abnormal actions in the door opening state, a door touch is generally arranged at the tail end of the motion track of the door, and the door touch has a limiting effect on the door. For example, chinese utility model patent publication No. CN207092773U discloses a door stopper structure, which includes a positioning member and a buffer assembly, the positioning member is provided with a clamp connector; the buffer assembly comprises a mounting seat and a reset elastic piece, a slide way is arranged on the mounting seat, a trigger slide block capable of moving back and forth is arranged on the slide way, and the trigger slide block is provided with a clamping part connected with the clamping head; one end of the slide way facing the positioning piece is a clamping end, the other end of the slide way is a suction end, and the clamping head can be clamped with or separated from the clamping part of the trigger slide block at the clamping end of the slide way; a rotary damping structure capable of generating resistance in the process that the trigger slide block moves from the clamping end of the slide way to the suction end is arranged between the mounting seat and the trigger slide block; the reset elastic part has elastic reset force for pulling the trigger slide block from the clamping end of the slide way to the suction end.

The above chinese utility model patent with publication number CN207092773U mainly has the following problems: firstly, the clamping joint is buffered through a mounting seat, a reset elastic piece, a trigger sliding block, a rotary damping structure and other parts, the structure is complex, the mounting requirement is high, inconvenience and quickness are realized, and in addition, a buffer assembly with a complex structure needs to occupy a larger volume; secondly, the buffering assembly limits the clamping head through a clamping part and a connecting part which are arranged on the trigger slider, and the distance between the clamping part and the connecting part is fixed, so that a large shaking virtual position exists between the clamping part and the connecting part when the clamping head is positioned; and thirdly, the cover plate is arranged on the left side of the trigger slider, so that a certain dustproof effect can be achieved, the cover plate is always positioned on the side edge of the trigger slider and cannot achieve the dustproof effect on the part of the trigger slider, and particularly, the cover plate cannot be used for positioning the clamping groove in the trigger slider of the clamping portion to achieve the dustproof effect.

Disclosure of Invention

In view of the above, in order to overcome the above technical problems, the present invention provides a horizontal position-limiting door latch pair with simple structure and stable positioning, which includes a position-limiting seat and a latch head for touching the position-limiting seat along the horizontal direction; the collision head comprises a collision base body, a first return spring, a buffer base body and a second return spring, wherein the collision head comprises a collision head arm used for contacting the collision base body and the buffer base body; the collision base body is movably arranged on the seat body along the up-down direction, the first return spring is arranged on the seat body and used for driving the collision base body to reset upwards, the buffer base body is movably arranged on the seat body along the left-right direction, and the second return spring is arranged on the seat body and used for driving the buffer base body to reset rightwards; the collision base body is used for being pushed by the collision head arm to move downwards when the collision head arm moves across the head top of the collision head arm along the horizontal direction so as to avoid the collision head arm, the buffering base body is used for being pushed by the collision head arm to move leftwards when the collision head arm moves along the horizontal direction towards the left and providing reverse buffering for the collision head arm in the process of being pushed leftwards, and the buffering base body is also used for being cooperated with the collision base body to limit that the collision head arm cannot move randomly after at least part of the collision head arm moves across the head top of the collision base body along the horizontal direction.

The horizontal direction, the vertical direction, the left-right direction, the left side and the right side mentioned below, and the like are relative orientations, and in a specific application, the orientations are adapted to the installation scene of the horizontal limit door knob pair.

The collision head is used for touching the limiting seat along the horizontal direction, the collision head and the limiting seat can be mutually touched, in the specific application, the limiting seat can be arranged on the ground of a building or the wall surface of the building, the collision head is arranged on a door, at the moment, the limiting seat is fixed, and the collision head moves along with the door to further generate mutual movement to generate contact, and the following description is mainly given in such a way; the collision head can be arranged on the ground of a building or the wall surface of the building, the limiting seat is arranged on the door, and at the moment, the collision head is fixed, and the limiting seat moves along with the door and can move mutually to generate contact.

The collision head comprises a collision head arm for contacting the collision base body and the buffer base body, and the collision head arm mainly defines the relative position relation between the collision base body and the buffer base body and the relative position relation among the collision base body, the buffer base body and the collision head arm in practical use, namely, after the limit seat and the collision head are respectively installed on a door leaf or the ground and start to be used, the collision base body and the buffer base body are both positioned on the motion track of the collision head arm moving along the horizontal direction so as to be capable of contacting with the collision head arm. As for the specific relative position relationship between the collision base body and the buffer base body, the arrangement can be flexible under the condition of realizing the above functions, for example, the buffer base body can be arranged at the side edge of the collision base body, namely, the buffer base body and the collision base body are in a left-right separated structural relationship, and the buffer base body is always positioned at the left side edge of the collision base body; the impact absorbing base and the collision base may be in a laterally and vertically spaced relationship, and the right end portion of the impact absorbing base may extend above the collision base or may extend beyond the collision base in a free state. However, regardless of the relative position therebetween, it is mainly ensured that the impact head arm can touch the impact base during the horizontal movement and then abut against the cushion base after passing over the impact base, so that the impact head arm is confined between the impact base and the cushion base.

The collision base body is elastically supported under the driving action of the first return spring and is in a free state of freely moving up and down, when the collision base body is pressed downwards due to external force such as collision of the head arm, the collision base body can move downwards to enable the head arm to pass over the collision base body, and after the collision base body passes over the head arm, the collision base body can move upwards under the driving action of the first return spring and is reset to the free state. In a specific embodiment, the collision base may be disposed at a right end of the seat body, so that the collision head arm touches the collision base as early as possible when moving horizontally from right to left, thereby reducing the length of the limiting seat in the left-right direction.

The buffer base body is elastically pushed to be in a free state of moving left and right under the driving action of the second return spring, when the buffer base body is pushed leftwards under the impact of an external force such as the collision of the collision head arm, the buffer base body can move leftwards and enable the collision head arm to finally stop at the right side position of the buffer base body, and after the collision head arm moves rightwards and leaves, the buffer base body can move rightwards under the driving action of the second return spring to be reset to be in the free state.

The collision base body is used for being pushed by the collision head arm to move downwards when the collision head arm moves across the head top of the collision head arm along the horizontal direction so as to avoid the collision head arm, the buffering base body is used for being pushed by the collision head arm to move leftwards when the collision head arm moves along the horizontal direction towards the left and providing reverse buffering for the collision head arm in the process of being pushed leftwards, and the buffering base body is also used for being cooperated with the collision base body to limit that the collision head arm cannot move randomly after at least part of the collision head arm moves across the head top of the collision base body along the horizontal direction. The characteristic defines that the collision base body can be pushed to move downwards by touching, namely the collision base body is pushed to move downwards to avoid the collision head arm in the horizontal moving process of the collision head arm; and secondly, the collision head arm can contact and push the buffer base body to move horizontally in the process of moving horizontally across the top of the collision base body, and the buffer base body can provide reverse buffer force for the collision head arm in the process, so that the kinetic energy for opening the door can be greatly relieved and released. In addition, this feature also defines the relative positional relationship between the cushion base and the impact base, i.e., the head arm can be defined between the cushion base and the impact base.

According to the technical scheme, the collision head arm is mainly used for touching the limiting seat and is limited by the limiting seat. In practical applications, the head arm may be entirely defined between the cushion base and the collision base over the collision base, or a part of the head arm may pass over the collision base, for example, an avoidance groove at least adapted to the top end portion of the collision base may be provided at a lower end surface of the head arm, and when the head arm passes over the collision base and allows the top end portion of the collision base to extend into the avoidance groove, the head arm may cooperate with the cushion base to define that the head arm cannot move left and right at will.

The collision head arm can firstly touch the collision matrix and then touch the buffer matrix, for example, when the buffer matrix is always positioned at the left side of the collision matrix, the collision head arm can only touch the buffer matrix after crossing the collision matrix; the striker arm can also first strike the impact base, in which case the striker arm can pass over the impact base during the leftward pushing of the impact base, for example, the end of the striker arm can extend above the impact base when the impact base is in the free state, as described below.

According to the technical scheme, compared with the prior art, the invention has the main beneficial effects that:

1. because spacing seat is including the collision base member that can follow the upper and lower direction and can drive the first reset spring that the collision base member upwards resets, still including the buffering base member that can follow left right direction and can drive the second reset spring that the collision base member resets right, can for this reason with the help of collision base member, buffering base member realize right the location of head arm lets the head arm can not remove at will and leave, can also with the help of buffering base member and second reset spring realize the buffering, alleviate and release the kinetic energy of opening the door to not only simplified the product structure but also reduced the vibration and the noise of product door opening collision.

2. Since the head arm is defined between the collision base and the cushion base and by the urging force of the second return spring, it is possible to stably define the head arm and reduce the rattling of the head arm in an imaginary position between the collision base and the cushion base.

3. When the head of meeting is kept away from when spacing seat, the buffering base member moves right and resets under the effect of second reset spring, thereby can cover the left side space of collision base member can also play dirt-proof effect to this space, just the buffering base member can cover according to specific structure even the top of collision base member realizes better dustproof effect. In addition, compared with the prior art that the cover plate with the dustproof effect is connected to the left side of the trigger sliding block, the whole length of the limiting seat is shortened, the space of the connecting part of the trigger sliding block can be saved at least, and the size is reduced.

In the above aspect, the buffer base may be a magnetic body or a non-magnetic body.

The position of the buffer matrix in a free state can be the following three schemes:

in the first aspect, the right end portion of the cushion base does not extend to contact the collision base when the cushion base is in the free state.

In a second aspect, the right end portion of the cushion base can be extended to contact the collision base when the cushion base is in a free state. Therefore, the left area of the collision base body can be shielded when the buffer base body is in a free state, a better dustproof effect can be achieved, and the collision base body can limit the rightward stroke of the buffer base body.

In a third aspect, the right end portion of the cushion base can extend above the collision base when the cushion base is in a free state. Like this, when the head knob arm is kept away from when spacing seat, the buffering base member can play better dustproof effect, in addition the head knob arm can touch earlier the buffering base member.

When the cushion base body is in a free state, the cushion base body is not subjected to an external force, for example, is not abutted by the head restraint arm, and the cushion base body can move to the rightmost side under the driving of the second return spring. The buffer base body can limit the stroke of the right movement through a limit structure to limit the position of the buffer base body in a free state, or can directly limit the position of the buffer base body in the free state through a limit position of the second return spring in the free state.

The further technical scheme can also be that the limiting seat further comprises a limiting structure, and the limiting structure is used for limiting the stroke of the buffer base body moving leftwards or rightwards. The movement range of the buffer base body is limited through the limiting structure, so that the movement stability of the buffer base body can be improved. The limit device comprises a limit base, a limit base and a limit seat, wherein the limit base is used for limiting the stroke of leftward movement of the buffer base and the stroke of leftward movement of the head latch arm positioned on the right side of the buffer base, so that the range of motion of the head latch arm between the buffer base and the collision base can be limited, and the stability of the head latch arm limited by the limit seat is improved.

The limiting structure can realize limiting action through the matching of the limiting arm, the first vertical arm and the second vertical arm, limit protrusions or limiting screws respectively positioned at two ends of the movement range of the buffer base body are arranged on the base to realize the limiting action, and the limiting action can be realized through mutually positioned protrusions and grooves.

As a limiting structure for limiting the rightward movement stroke of the buffer base body, a further technical solution may be that the limiting structure includes a limiting arm disposed on the seat body, and also includes a first vertical arm disposed at the left end of the buffer base body, the first vertical arm is located at the left side of the limiting arm, and when the buffer base body moves rightward, the limiting arm is used for limiting the rightward movement stroke of the first vertical arm, so as to limit the rightward movement stroke of the buffer base body.

Further technical solution may also be that the second return spring is horizontally disposed at a left side of the first upright arm and is configured to apply a rightward driving force to the first upright arm. The first vertical arm which plays a limiting role is skillfully applied as a connecting component of the buffer base body and the second return spring, so that the structure of the buffer base body can be simplified, and the overall volume of the limiting seat is reduced.

As a limiting structure for limiting the leftward movement stroke of the buffer base, a further technical solution may be that the limiting structure includes a limiting arm disposed on the base and a second vertical arm disposed at the right end of the buffer base, the second vertical arm is located at the right side of the limiting arm, and when the buffer base moves leftward, the limiting arm is configured to limit the leftward movement stroke of the second vertical arm, so as to limit the leftward movement stroke of the buffer base.

In order to facilitate the installation of the buffer base body, a further technical scheme may be that the base body includes a main seat portion and a housing covering the main seat portion, a first limiting arm extending upward is provided on the main seat portion, a second limiting arm extending downward is provided on the housing, the first limiting arm and the second limiting arm jointly form the limiting arm, and the buffer base body is arranged between the first limiting arm and the second limiting arm. Therefore, when the buffer base body is installed, the buffer base body is firstly arranged above the first limiting arm, and then the cover shell is covered, so that the buffer base body can be limited between the first limiting arm and the second limiting arm. In addition, the main seat part generally needs to be provided with openings for facilitating the installation of other structures such as the buffer base body, and the cover shell not only can limit the buffer base body, but also can play a role in dust prevention and beauty for the main seat part. In addition, the first limiting arm and the second limiting arm are ingeniously applied to form the limiting arm for limiting the movement of the buffer base body, so that the structure can be simplified, and the buffer base body is convenient to mount.

The first limiting arm and the second limiting arm can be on the same vertical surface, and can also be staggered at a certain distance from left to right.

The technical scheme can be that the right side of the base body is provided with a limiting cavity in an open shape, the collision base body is arranged in the limiting cavity, and the cavity wall of the limiting cavity does not obstruct the lower end part of the collision head arm to enter the limiting cavity along the horizontal direction so as to touch the collision base body.

The cavity wall in spacing chamber does not hinder the lower tip of bumping head arm enters into along the horizontal direction thereby the spacing intracavity touches bump the base member, defined spacing chamber is provided with the confession bump head arm enters into along the horizontal direction the passageway in spacing intracavity, for example the upper portion and the right part in spacing chamber are open structure, bump head arm can by when following the horizontal migration of right side left the right part in spacing chamber is uncovered and is entered into the spacing intracavity. The collision matrix is accommodated in the limiting cavity, so that the collision matrix can be protected to a certain extent, and the integral attractiveness can be improved.

The collision head further comprises a collision head seat and a mounting arm, wherein the collision head seat is connected to a door leaf, the collision head arm is connected to the mounting arm, and the mounting arm is connected to the collision head seat; the collision head base is provided with a third reset spring and a guide rod which is arranged along the vertical direction, the collision head base is provided with an extension arm which extends out along the horizontal direction, the extension arm is provided with a screw rod through hole, the guide rod comprises a threaded rod body part and a rod body head part, and the outer diameter of the rod body head part is larger than the inner diameter of the screw rod through hole; be provided with on the installation arm with the screw hole of screw rod body portion looks adaptation, the threaded rod body portion of guide arm passes from last down male mode connect again behind screw rod through-hole, the third reset spring in the screw hole of installation arm, the third reset spring suit is in on the guide arm and be located the extension arm with between the installation arm, thereby let the installation arm can for when receiving external force and assault the meeting head seat reciprocates, and can adjust through the rotation the installation arm for the upper and lower position of meeting head seat. When the door leaf is used for a long time and sags, the collision between the collision head arm and the limiting seat is influenced by the fact that the collision head arm also lowers, the mounting arm can be adjusted to move up and down relative to the collision head seat through rotating the guide rod, so that the offset position of the collision head arm is compensated, parts such as the collision head seat, the collision head arm and the like do not need to be detached when the height of the collision head arm is adjusted, the guide rod only needs to be in a rotatable state, and the adjustment is extremely convenient.

In order to improve the stability of the movement of the buffering base body, a pair of horizontal guide grooves may be formed in the base body, buffering guide portions are arranged at the front end and the rear end of the buffering base body, and the buffering guide portions are arranged in the horizontal guide grooves and can move horizontally along the horizontal guide grooves. Therefore, the horizontal guide groove can guide the buffer base body to move left and right, and the moving stability can be improved. It should be noted that the cushion substrate of the present invention may also move left and right along an arcuate path.

In order to improve the stability of the movement of the collision base body, a further technical scheme may be that the seat body is provided with a pair of vertical guide grooves, collision guide portions are arranged at the front end and the rear end of the collision base body, and the collision guide portions are arranged in the vertical guide grooves and can ascend and descend along the vertical guide grooves.

The door stop has the characteristics and advantages, so that the door stop can be used for horizontal limit door stop centering.

Drawings

FIG. 1 is a schematic view of the horizontal stop latch of the present invention in a configuration for engaging a door;

FIG. 2 is an exploded view of the pair of horizontal stop bolts of the present invention;

FIG. 3 is a cross-sectional view of the overall structure of the horizontal stop keeper of the present invention with the keeper head of the door latch pair removed from the stop block;

FIG. 4 is a cross-sectional view of the overall construction of the horizontal stop door latch center of the present invention as it would appear with the latch head between the impact base and the bumper base.

FIG. 5 is a schematic view of the structure of the impact head facilitating adjustment of the height of the impact head arm;

FIG. 6 is an exploded schematic view of FIG. 5;

fig. 7 is a schematic structural view of the striker shown in fig. 5 after the cover is disposed.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the terms upper, lower, left, right, front, rear, and the like as may be used herein or shortly thereafter are used solely with reference to the drawings attached hereto and are not meant to be limiting.

The structure of the horizontal limit door stop pair applying the technical scheme of the invention is further explained by combining the attached drawings.

As shown in fig. 1, the invention discloses a horizontal limit door latch pair, which comprises a limit seat 100 and a latch 2 for touching the limit seat 100 along the horizontal direction. The collision head 2 is installed on the door 3, the limit seat 100 is installed on the ground of a building and is located on the left side of the collision head 2, and the collision head 2 moves leftwards along with the door 3 and can touch the limit seat 100. In other embodiments, the striking head 2 is installed on the door 3, and the limit seat 100 is installed on a wall surface of a building; the collision head 2 may be installed on the ground or wall of a building, and the stopper 100 may be installed on the door 3.

The limiting seat 100 comprises a seat body 1, a collision base body 4, a first return spring 5, a buffering base body 6 and a second return spring 7, wherein the collision base body 4, the first return spring 5, the buffering base body 6 and the second return spring 7 are respectively installed on the seat body 1.

As shown in fig. 2 and 3, the collision base 4 is movably disposed at a right end portion of the seat body 1 in the up-down direction, and the first return spring 5 is disposed on the seat body 1 for driving the collision base 4 to return upward. Specifically, the right end portion of the seat body 1 is provided with a limiting cavity 10 in an open shape, the collision base body 4 can be arranged in the limiting cavity 10 in a vertically movable manner, the first return spring 5 is also arranged in the limiting cavity 10 and is arranged between the collision base body 4 and the bottom wall of the limiting cavity 10, the collision base body 4 is elastically supported in a free state of moving up and down under the driving action of the first return spring 5, and when the collision base body 4 is impacted by an external force, such as the collision head arm 21 and is pushed downwards, the collision base body can move downwards to avoid the collision head arm 21 to pass over the collision head arm 21, and after the collision head arm 21 passes over, the collision base body can move upwards under the driving action of the first return spring 5 to return to the free state. The collision base body 4 is arranged at the right end of the seat body 1, so that the collision head arm 21 can touch the collision base body 4 as early as possible when moving horizontally from right to left, thereby reducing the length of the limiting seat 100 in the left-right direction, and the collision base body 4 can also be arranged at a position close to the middle part of the seat body 1. In order to realize the above-mentioned impact pushing operation, as shown in the figure, the lower end impact working surface 24 of the head arm 21 and the top end impact working surface 42 of the impact base 4 are both arc-shaped.

Wherein, the first return spring 5 adopts a compression third return spring which is vertically arranged below the collision matrix 4 and clamped between the collision matrix 4 and the base 1b below, so that the first return spring 5 always applies an upward pushing force to the collision matrix 4. In other embodiments, the first return spring 5 may also be another component that can return the impact base 4 upward.

In order to improve the stability of the up-and-down movement of the collision base 4, the seat body 1 is provided with a pair of vertical guide grooves 11, and collision guide portions 41 are provided at the front and rear ends of the collision base 4, and the collision guide portions 41 are arranged in the vertical guide grooves 11 and can be lifted along the vertical guide grooves 11. The upper end of the vertical guide groove 11 does not extend out of the seat body 1, but forms a limiting surface for limiting the collision guide portion 41. Of course, the crash base 4 can also be limited at its upper end by other structures, such as projections provided on the seat body 1.

As shown in fig. 2 and 3, the buffering base 6 is disposed on the seat body 1, the buffering base 6 is movably disposed at a side of the collision base 4 in the left-right direction, the second return spring 7 is disposed on the seat body 1 for driving the buffering base 6 to return to the right, when the head arm 21 does not collide with the buffering base 6, the buffering base 6 is in a free state capable of moving left and right under the driving action of the second return spring 7, when the buffering base 6 is pushed leftward under the pushing action of an external force such as the head arm 21, the buffering base 6 can move horizontally leftward, the head arm 21 finally stops at the right side position thereof, and after the head arm 21 moves away in the right direction, the buffering base can move rightward under the driving action of the second return spring 7 to return to the free state. It can be seen that the head restraint arm 21 does not directly push the buffer base 6 to rigidly impact the base 1, but the second return spring 7 has a certain buffer effect on the head restraint arm 21 under the elastic force effect, and the buffer structure is simple, convenient to install and small in occupied size. Further, since the head arm 21 is defined between the collision base 4 and the cushion base 6 and by the urging force of the second return spring 7, it is possible to stably define the head arm 21 and reduce the virtual position wobbling of the head arm 21.

In order to improve the stability of the movement of the buffer base body 6, a pair of horizontal guide grooves 12 is provided on the base body 1, buffer guide portions 63 are provided at the front and rear ends of the buffer base body 6, and the buffer guide portions 63 are disposed in the horizontal guide grooves 12 and can move in a translational manner along the horizontal guide grooves 12. In this way, the horizontal guide groove 12 can guide the horizontal translation of the cushion base 6, and the stability of the movement can be improved. In other embodiments, the guide groove for guiding the buffer base 6 may also be an arc shape, and the buffer base 6 moves left and right along the arc path.

As shown in fig. 1, the bumper head 2 is crank-shaped and includes a bumper head arm 21 for contacting the bumper base 6 and the bumper base 4, and a mounting arm 22 disposed above the bumper head arm 21, wherein a mounting through hole 23 is disposed on the mounting arm 22, and the mounting arm 22 is locked on the door 3 after passing through the mounting through hole 23 by a screw (not shown in the drawings) so as to fix the bumper head 2. When the collision head 2 is installed on the door 3, the installation arm 22 contacts with the surface of the door 3, and a collision borrowing space 30 is formed between the collision head arm 21 and the surface of the door 3, so that when the collision head arm 21 passes over the collision base 4, the collision base 4 is not interfered by the door 3 and the collision head arm 21 does not need to extend downwards out of the door 3.

The head restraint arm 21 is mainly used for touching the restraint base 100 and is limited by the restraint base 100. In practical applications, the head restraint arm 21 may be entirely defined by the retainer block 100 across the impact base 4, such as the door latch pair disclosed in the present embodiment; a part of the head arm 21 may be defined by the stopper seat 100 so as to pass over the collision base 4, for example, a recess (not shown) capable of accommodating the collision base 4 may be provided on a lower end surface of the head arm 21, and when the head arm 21 is located above a top end portion of the collision base 4 and the top end portion of the collision base 4 extends into the recess of the head arm 21, the head arm 21 may be defined between the collision base 4 and the cushion base 6.

When the head arm 21 moves in the horizontal direction toward the seat body 1, it not only touches the collision base 4 but also abuts against the right side of the cushion base 6 after passing over the collision base 4 so that the head arm 21 is confined between the collision base 4 and the cushion base 6. Wherein, the head restraint arm 21 can touch at the horizontal migration in-process collision base member 4 can collide again buffering base member 6, collision base member 4 is right head restraint arm 21 mainly plays the positioning action, and buffering base member 6 is right head restraint arm 21 mainly plays buffering positioning action and with collision base member 4 cooperatees the location head restraint arm 21.

In the door latch pair of the present invention, when the head arm 21 moves leftward and presses downward and stops at the right side of the cushion base 6 after passing over the collision base 4 during use, the head arm 21 is confined between the cushion base 6 and the collision base 4, and when the door 3 is forcibly driven rightward to return to the closed door position, the head arm 21 also moves rightward, and the head arm 21 again passes over the collision base 4 in the reverse direction and can leave the cushion base 6.

As shown in fig. 4, the right end portion of the cushion base 6 can extend above the collision base 4 when the cushion base is in a free state. Thus, when the head arm 21 is far away from the base 1, the buffer base 6 can play a good dustproof role in the space on the left side of the collision base 4 (also the space below the buffer base 6), and in addition, the head arm 21 can touch the buffer base 6 earlier, so that the buffer distance can be increased without increasing the length of the base 1. The limit position of the right end of the cushion base 6 may be right above the collision base 4 without passing over the collision base 4, which is the case in fig. 4, in which the head arm 21 first touches the collision base 4 and then touches the cushion base 6; in other embodiments, the limit position of the right end of the damping base 6 may also be beyond the impact base 4 to the right of the impact base 4, in which case the impact head arm 21 first touches the damping base 6 and then touches the impact base 4.

In other embodiments, the right end of the cushion body 6 can extend to contact the impact body 4 when the cushion body is in a free state. Thus, when the buffer base body 6 is in a free state, the left area of the collision base body 4 can be shielded, a good dustproof effect can be achieved, and the collision base body 4 can limit the rightward stroke of the buffer base body 6.

Here, when the cushion base 6 is in a free state, it means a state in which the cushion base 6 is moved to the rightmost side by the driving of the second return spring 7 when the cushion base 6 is not subjected to an external force, for example, is not abutted by the head arm 21. Of course, the end of the damping body 6 can also be located to the left of the crash body 4 in the free state and not be in contact with the crash body 4.

The collision base body 4 and the buffer base body 6 may include a left-right separated structural relationship, and the buffer base body 6 is always located on the left side of the collision base body 4; it is also possible to arrange in a structural relationship of left-right spaced and up-down spaced, with the right end portion of the cushion base 6 being able to extend above the collision base 4 and even beyond the collision base 4 in a free state. However, regardless of the relative position therebetween, it is mainly ensured that the impact arm 21 can touch the impact base 4 during the horizontal movement and then abut against the cushion base 6 after passing over the impact base 4, so that the impact arm 21 is confined between the impact base 4 and the cushion base 6.

From top to bottom, because spacing seat 100 is including the collision base member 4 that can follow the upper and lower direction and can drive the first reset spring 5 that collision base member 4 upwards resets still including the buffering base member 6 that can follow left right direction and can drive the second reset spring 7 that collision base member 4 resets right can for this reason with the help of collision base member 4, buffering base member 6 realize the location, can help again buffering base member 6 realizes the buffering to not only simplified the product structure but also reduced the vibration and the noise that the product opened 3 collisions.

In order to facilitate the installation of the buffer base body 6, the base body 1 includes a main seat portion (1 a, 1 b) and a housing 1c covering the main seat portion (1 a, 1 b), a first limiting arm 13 extending upward is disposed on the main seat portion (1 a, 1 b), a second limiting arm 14 extending downward is disposed on the housing 1c, the first limiting arm 13 and the second limiting arm 14 are located on the left side of the collision base body 4, the first limiting arm 13 and the second limiting arm 14 jointly form a limiting arm (13, 14), a gap for the buffer base body 6 to move through is reserved between the first limiting arm 13 and the second limiting arm 14 in the up-down direction, and the buffer base body 6 is disposed in the gap between the first limiting arm 13 and the second limiting arm 14. The first limiting arm 13 and the second limiting arm 14 are located on the same vertical plane, and may be staggered by a certain distance in the left-right direction in other embodiments.

During installation, the buffering base body 6 is arranged above the first limiting arm 13, then the housing 1c is covered, and the buffering base body 6 can be limited between the first limiting arm 13 and the second limiting arm 14. In addition, the main seats (1 a, 1 b) generally need to be provided with openings for facilitating the installation of other structures, such as the buffer base body 6, and the cover 1c not only can limit the buffer base body 6, but also can play a role in dust prevention and beauty of the main seats (1 a, 1 b).

The main seat parts (1 a, 1 b) comprise a base 1b and a mounting seat 1a mounted on the base 1b, and the horizontal guide groove 12, the vertical guide groove 11 and the first limiting arm 13 are all arranged on the mounting seat 1 a. The left end of the horizontal guide groove 12 extends out of the mounting seat 1a, the buffering guide part 63 of the buffering base body 6 is inserted from the left end of the horizontal guide groove 12 so as to realize the clamping of the buffering base body 6, the left end part of the base 1b is provided with a vertical part 11b, the second return spring 7 is arranged between the vertical part 11b and the first vertical arm 61 of the buffering base body 6, and the first return spring 5 is arranged between the base 1b and the collision base body 4.

The limiting seat 100 further comprises a limiting structure for limiting the stroke of the buffer base body 6 moving leftwards and rightwards. According to the invention, the movement range of the buffer base body 6 is limited by the limiting structure, so that the movement stability of the buffer base body 6 can be improved. The stroke of the buffer base body 6 moving leftward is limited, and the stroke of the head restraint arm 21 moving leftward on the right side of the buffer base body 6 can be limited at the same time, so that the moving range of the head restraint arm 21 between the buffer base body 6 and the collision base body 4 can be limited, and the stability of the head restraint arm 21 when limited by the limiting seat 100 is improved.

As an implementation structure for limiting the rightward movement stroke of the buffer base body 6, the limiting structure includes the limiting arm (13, 14), specifically, the first limiting arm 13, and also includes a first vertical arm 61 disposed at the left end of the buffer base body 6, the first vertical arm 61 is located at the left of the first limiting arm 13, and when the buffer base body 6 moves rightward, the first limiting arm 13 is used for limiting the rightward movement stroke of the first vertical arm 61, so as to limit the rightward movement stroke of the buffer base body 6.

Further, the second return spring 7 is horizontally disposed on the left side of the first upright arm 61 and serves to apply an elastic force to the right to the first upright arm 61. The first vertical arm 61 which has a limiting effect is skillfully applied as a connecting member of the buffer base body 6 and the second return spring 7, so that the structure of the buffer base body 6 can be simplified, and the overall volume of the limiting seat 100 can be reduced.

In addition, as an implementation structure for limiting the leftward movement stroke of the buffer base 6, the limiting structure includes the limiting arm (13, 14), specifically the second limiting arm 14, and also includes a second vertical arm 62 disposed at the right end of the buffer base 6, where the second vertical arm 62 is located at the right side of the second limiting arm 14, and when the buffer base 6 moves leftward, the second limiting arm 14 is used to limit the leftward movement stroke of the second vertical arm 62, so as to limit the leftward movement stroke of the buffer base 6.

In this embodiment, the first vertical arm 61 extends downward and cooperates with the first limiting arm 13 located below the buffer base 6 to realize a limiting function, so that the space below the buffer base 6 can be fully utilized, and the housing 1c is designed into an arc shape or other shapes with small volume and more attractive appearance. The second vertical arm 62 extends upwards and is matched with the second limit arm 14 above the buffer base body 6 to realize a limit function, so that the second vertical arm 62 not only can play a limit role, but also can be used as a collision part of the buffer base body 6 and the head contact arm 21. Further, the second upright arm 62 extending upward does not interfere with the mounting of the cushion base 6.

In other embodiments, the limiting arms (13, 14) may be an integrated upper limiting arm located above the buffer base 6, and the first vertical arm and the second vertical arm extending upward are respectively disposed at the left end and the right end of the buffer base 6; of course, the limiting arms (13, 14) may also be lower limiting arms arranged below the buffer base body 6, and correspondingly, the first vertical arm and the second vertical arm both extend downwards. The limiting structure may be a protrusion and a groove structure which are mutually positioned, for example, a limiting groove arranged along the left-right direction is provided on the buffer base body 6, a limiting arm penetrating into the limiting groove is provided on the limiting seat 100, and the limiting is realized through the limiting arm and the limiting groove, or the limiting groove and the limiting arm are inversely arranged. The limiting structure of the present invention may also be other structures capable of limiting the moving stroke of the buffer base 6, which is not listed here.

It should be noted that the right side of the seat body 1 is provided with the open-ended limiting cavity 10, the cavity wall of the limiting cavity 10 does not prevent the lower end portion of the head arm 21 from entering the limiting cavity 10 along the horizontal direction so as to touch the collision base 4, that is, the cavity wall of the limiting cavity 10 is shorter than the top end face of the collision base 4 by a certain distance in the direction facing the head arm 21.

In this embodiment, the upper portion and the right portion of the limiting cavity 10 are both open structures, i.e. an upper opening 10a and a right opening 10b shown in the figure, and the head striking arm 21 can enter the limiting cavity 10 from the right opening 10b of the limiting cavity 10 when moving horizontally from right to left. According to the invention, the collision matrix 4 is accommodated in the limit cavity 10, so that the collision matrix 4 can be protected to a certain extent, the integral aesthetic property can be improved, and the collision height between the collision head arm 21 and the collision matrix 4 can be reduced.

As shown in fig. 5 and 6, in order to solve the problem that the door leaf droops to cause the position of the impact arm to be lowered to affect the impact between the impact arm and the limit seat, the impact head of the present invention further comprises an impact head seat 23 and a mounting arm 22, wherein the impact head seat 23 is used for being connected to the door leaf 3, the impact head arm 21 is connected to the mounting arm 22, and the mounting arm 22 is connected to the impact head seat 23; the tap base 23 is provided with a third return spring 24 and a guide rod 25 arranged in the up-down direction, the tap base 23 is provided with an extension arm 231 extending in the horizontal direction, the extension arm 231 is provided with a screw rod through hole 232, the guide rod 25 comprises a threaded rod body 251 and a rod body head 252, and the outer diameter of the rod body head 252 is larger than the inner diameter of the screw rod through hole 232; the mounting arm 22 is provided with a threaded hole 221 adapted to the threaded rod portion 251, the threaded rod portion 251 of the guide rod 25 passes through the threaded rod through hole 232 and the third return spring 24 in a manner of being inserted from top to bottom and then is screwed into the threaded hole 221 of the mounting arm 22, and the third return spring 24 is sleeved on the guide rod 25 and is located between the extension arm 231 and the mounting arm 22, so that the mounting arm 22 can move up and down relative to the striker base 23 when being impacted by an external force, and the vertical position of the mounting arm 22 relative to the striker base 23 can be adjusted by rotating the guide rod 25. Thus, the guide rod 25 can be rotated to adjust the mounting arm 22 to move up and down relative to the head base 23 to compensate for the offset position of the head arm 21, and the guide rod 25 can be rotated without detaching the head base 23, the head arm 21, and other parts when adjusting the height of the head arm 21, thereby providing a very convenient adjustment.

Wherein, be provided with locking through-hole 233 on the knob seat 23, the knob seat 23 passes through screw (not shown in the drawing) locking through-hole 233 fixes on door leaf 3, still be provided with the boss arm 234 that extends along the horizontal direction on the knob seat 23, extension arm 231 with boss arm 234 is up-and-down direction and arranges the same one side of knob seat 23, be used for between extension arm 231 and the boss arm 234 the space that installation arm 22 reciprocated. In order to prevent the swing of the head arm 22 during the collision with the collision base 4, the mounting arm 22 is provided with a vertical guide bar 222, the boss arm 234 is provided with a head arm guide groove 235 matched with the vertical guide bar 222, and the position of the vertical guide bar 222 in the horizontal direction can be limited by the head arm guide groove 235, so that the swing of the head arm 21 is prevented.

As shown in fig. 7, the vehicle bumper further comprises a cover body 8, the cover body 8 covers the bumper head 2, the cover body 8 can prevent dust, improve the aesthetic property of the structure, and limit the guide rod 25 through the cover body 8 to prevent the guide rod 25 from moving upwards when in a working state. The cover 8 is provided with a cover through hole 81, the extension arm 231 is provided with a mounting hole 236 matched with the cover through hole 81, and the cover 8 is connected to the tap holder 23 after passing through the cover through hole 81 and the mounting hole 236 by screws (not shown in the figure).