CN210799621U

CN210799621U - Double-stroke V-shaped elastic buckle and positioning structure

Info

Publication number: CN210799621U
Application number: CN201921049392.5U
Authority: CN
Inventors: 郑天夏; 郑世平; 范克安
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-06-19
Anticipated expiration: 2029-07-05

Abstract

The utility model relates to a double-stroke V-shaped elastic buckle and positioning structure, which comprises an elastic buckle main body arranged in a pipe fitting, wherein the elastic buckle main body consists of a V-shaped reed and a convex pin which is arranged at one end part of the V-shaped reed and faces outwards; the method is characterized in that: a stopper is arranged in the pipe fitting at the lower side of the elastic buckle main body, can abut against the V-shaped reed upwards, is clamped between the V-shaped reed and the pipe wall, and forces the V-shaped reed with the convex pin to retract to a short stroke state, and can be automatically unlocked; the convex pin is automatically unlocked in place, the blocking piece loses the clamping force and can fall freely, the V-shaped reed is popped up again, and the convex pin is in a long-stroke state. The utility model has the characteristics of think about ingenious, reasonable in design, easy operation, locking reliable, have long round pin and short round pin bullet knot performance concurrently, solve traditional structure and need both hands synchronous operation's defect.

Description

Double-stroke V-shaped elastic buckle and positioning structure

The technical field is as follows:

the utility model belongs to mechanical positioning field, in particular to double-stroke V-arrangement bullet is buckled and location structure, and especially double-stroke bullet is buckled and is in reliable locking of long stroke ability, short stroke and allows automatic unblock.

Background art:

in the field of self-locking mechanical positioning, two types of pins are widely used, namely a ball plunger and a V-shaped elastic buckle, and the V-shaped elastic buckle is very suitable for being installed in a surrounding structure, such as a pipe fitting, and provides automatic positioning for stretching or swinging. The structure of the V-shaped clamp spring comprises a V-shaped clamp spring, wherein a ball head or a conical head convex pin is arranged at one end part of the V-shaped clamp spring in an outward protruding mode, and the V-shaped clamp spring is inserted into another object by means of the convex pin to form a positioning relation. For example, patent application No. 2017210209101 discloses a snap fastener, which is mainly used for reinforcing a protruding pin so as to bear larger force; patent application No. 2017209830064 discloses a tool for installing a snap fastener, which refers to a spring and a button, namely a V-shaped snap fastener, and a tool for installing the snap fastener in a pipe.

The existing V-shaped elastic buckle is also evolved into a long pin and a short pin, the long pin V-shaped elastic buckle cannot realize the automatic unlocking function, and the long pin can be released only after being pressed by external force to retract, namely, the long pin is retracted by pressing one hand, and the pipe fitting is operated by the other hand to be separated from the original position. Its advantages are reliable positioning and bearing a certain force load; and the short pin V-shaped elastic buckle keeps the functions of automatic positioning and automatic unlocking.

The invention content is as follows:

the utility model aims to design a double-stroke elastic buckle, wherein a baffle piece is arranged below a V-shaped elastic buckle main body, and the baffle piece controls the stroke of a convex pin; and a positioning structure composed of the double-stroke elastic buckle.

The utility model discloses technical scheme realizes like this: a double-stroke V-shaped elastic buckle comprises an elastic buckle main body arranged in a pipe fitting, wherein the elastic buckle main body consists of a V-shaped reed and a convex pin which is arranged at one end part of the V-shaped reed and faces outwards; the method is characterized in that: a stopper is arranged in the pipe fitting at the lower side of the elastic buckle main body, can abut against the V-shaped reed upwards, is clamped between the V-shaped reed and the pipe wall, and forces the V-shaped reed with the convex pin to retract to a short stroke state, and can be automatically unlocked; the convex pin is automatically unlocked in place, the blocking piece loses the clamping force and can fall freely, the V-shaped reed is popped up again, and the convex pin is in a long-stroke state.

The stopper comprises a contact end and an operating end, the thickness or height of the contact end along the radial direction of the pipe fitting is larger than or equal to the difference between the long stroke and the short stroke of the convex pin, and the operating end is provided with a long slotted hole and is restrained in the pipe fitting by a rivet.

The stopper is formed by bending a metal sheet, the operating end is of a U-shaped structure, the contact end extends from the U-shaped end of the operating end and forms an arc bending section, and the contact end is abutted against the surface of the V-shaped reed of the elastic buckle main body by virtue of an arc; the arc bending-out section of the contact end has a radial height along the pipe fitting which is greater than or equal to the difference between the long stroke and the short stroke of the convex pin.

A positioning structure comprises a pipe fitting, a fixing piece and the double-stroke V-shaped elastic buckle; the pipe fitting is positioned on the fixing piece through the rivet, can swing around the rivet, and is locked at a specific angle of the fixing piece by means of a double-stroke V-shaped elastic buckle arranged in the pipe fitting; the method is characterized in that: the double-stroke V-shaped elastic buckle comprises an elastic buckle main body and a stopper, wherein the elastic buckle main body is arranged in the pipe fitting and consists of a V-shaped reed and a convex pin which is arranged at one end part of the V-shaped reed and faces outwards; the stopper is provided with a contact end and an operation end, and the operation end is provided with a long slotted hole; the rivet penetrates through the long slotted hole of the operating end, the stopper is constrained in the pipe fitting and is positioned at the lower side of the elastic buckle main body, the stopper can abut against the V-shaped reed upwards and is clamped between the V-shaped reed and the pipe wall, the V-shaped reed with the convex pin is forced to retract to a short stroke state, and the pipe fitting is allowed to swing and unlock; the convex pin is automatically unlocked in place, the blocking piece loses the clamping force and falls freely, the V-shaped spring leaf is popped up again, and the convex pin is in a long-stroke state, so that a reliable locking structure is formed.

The utility model has the characteristics of ingenious conception, reasonable design, simple operation, reliable locking and long pin and short pin elastic buckle performance; by means of the long stroke of the convex pin, the spring can be automatically ejected out for locking and positioning after being pressed, and the spring has reliable positioning and can bear certain force; the stop piece is manually pressed upwards, so that the elastic buckle is in a short-stroke state, convenience is brought to automatic unlocking, and only the pipe fitting needs to be slightly swung forcefully; the double-stroke elastic buckle is particularly suitable for occasions adopting a double-lock structure, such as two folding armrests of a handcart or a baby carriage, the armrests of a folding chair and the like, and has the advantages of reliable positioning and capability of solving the defect that the traditional structure needs to be operated by two hands synchronously.

Description of the drawings:

the present invention will be further explained with reference to the following specific drawings:

FIG. 1 is an exploded view of a double-stroke buckle

FIG. 2 is a sectional view of a double-stroke buckle in a long stroke state

FIG. 3 is a sectional view of a double-stroke snap fastener in a short stroke state

FIG. 4 is a schematic view of the pushing state of the cart

FIG. 5 is an enlarged view of a portion I in FIG. 4

FIG. 6 is a schematic view of the handle of the cart in a swinging state

FIG. 7 is an enlarged view of a portion II of FIG. 6

Wherein

1-main body of elastic buckle 11-V-shaped reed 12-convex pin 2-stopper

21-contact end 211-arc 22-operation end 221-long slot

3-rivet 4-pipe fitting 41-through hole 5-fixing piece

51-inclined plane 52-lock hole

The specific implementation mode is as follows:

referring to fig. 1, 2 and 3, the double-stroke V-shaped latch comprises a latch body 1 and a stopper 2, wherein the latch body 1 is composed of a V-shaped spring plate 11 and a convex pin 12 which is arranged at one end of the V-shaped spring plate and faces outwards; the latch body 1 is mounted in the tube 4 and is supported in the wall of the tube by means of the V-shaped spring 11, and its protruding pin 12 just extends out of the through hole 41 in the wall of the tube to be sprung into another object to form an angle or position lock, which is also a common structure in the prior art.

The stopper 2 comprises a contact end 21 and an operation end 22, the thickness or height of the contact end 21 along the radial direction of the pipe 4 is larger than or equal to the difference between the long stroke and the short stroke of the convex pin 12, the operation end 22 is provided with a long slotted hole 221, is restrained in the pipe 4 by the rivet 3, is positioned below the snap body 1, and can freely fall by means of self weight.

More specifically, the stopper 2 is formed by bending a metal sheet, the operating end 22 is a U-shaped structure, and the abutting end 21 extends from the U-shaped end of the operating end and forms an arc bending section, that is, has an arc 211 bending part, and abuts against the surface of the V-shaped spring 11 of the latch body by means of the arc 211; the arc bending section of the contact end 21 has a height along the radial direction of the pipe 4 which is greater than or equal to the difference between the long stroke and the short stroke of the convex pin 12. The contact end 21 may be folded several times to form a block with a certain thickness or a bump is welded, and the thickness of the block or the bump is larger than or equal to the difference between the long stroke and the short stroke of the protruding pin 12, but the structure is the simplest in this embodiment.

Assembly, the stop 2 is below the body latch 1, positioned by the rivet 3 in the tube 4, as shown in fig. 1 and 2; when in use, the stopper 2 moves upwards, the abutting end 21 of the stopper can abut against the V-shaped spring leaf 11 and is clamped between the V-shaped spring leaf 11 and the pipe wall, and the V-shaped spring leaf 11 together with the convex pin 12 is forced to retract to a short stroke state, so that the stopper can be automatically unlocked, as shown in fig. 3; the protruding pin 12 is automatically unlocked in place, the stopper 2 loses the clamping force and can fall freely, the V-shaped spring leaf 11 is ejected again, and the protruding pin 12 is in a long-stroke state and returns to the state shown in figure 2.

The positioning structure utilizing the double-stroke elastic buckle is as follows:

referring to fig. 4 to 7, the present embodiment is a cart, taking a swing armrest as an example, and illustrating a specific positioning structure, the positioning structure includes: the pipe fitting 4, the fixing piece 5 and the double-stroke V-shaped elastic buckle; the pipe fitting 4 is positioned on the fixing piece 5 through the rivet 3, can swing around the rivet 3, and is locked on a specific angle of the fixing piece 5 by means of a double-stroke V-shaped elastic buckle arranged in the pipe fitting 4; in this example, the pipe fitting 4 is a folding handrail of the trolley, the fixing part is a trolley frame, and the folding handrail can fall backwards on the rear side of the trolley frame and does not occupy height space; or the bicycle can be designed to swing forwards and be placed above the bicycle frame, and the storage height can also be reduced.

Referring to fig. 2 and 3, the double-stroke V-shaped latch comprises a latch body 1 and a stopper 2 installed in the pipe fitting 4, wherein the latch body 1 is composed of a V-shaped spring plate 11 and a convex pin 12 which is arranged at one end of the V-shaped spring plate and faces outwards; the stopper 2 has a contact end 21 and an operation end 22, and the operation end 22 is provided with a long slot 221; the rivet 3 for positioning the pipe fitting 4 simultaneously passes through the long slot hole 221 of the operation end, restrains the stopper 2 in the pipe fitting and is positioned at the lower side of the snap-fastener main body 1; the stopper 2 moves upwards to abut against the V-shaped reed 11, is clamped between the V-shaped reed and the pipe wall, and forces the V-shaped reed 11 together with the convex pin 12 to retract to a short-stroke state to allow the pipe fitting 4 to swing and unlock; that is to say, the unblock of latch closure in the pipe fitting of handcart handrail both ends can be in the short stroke state respectively with the help of keeping off piece 2, and at this moment, only need swing the handrail, also both ends pipe fitting can be synchronous unblock promptly to the permission is swung to fold condition. At the moment that the convex pin 12 is automatically unlocked in place, the blocking piece 2 loses the clamping force and falls freely, the V-shaped reed 11 pops up again, the convex pin 12 is in a long-stroke state, and along with the repeated swinging of the handrail, the convex pins 12 on the pipe fittings at two ends of the handrail are extruded and retracted by the inclined surface 51 of the fixing piece and are popped into the lock hole 52 of the fixing piece to form a reliable locking structure, namely the handrail is in an inclined state for being pushed and pulled by two hands.

In this example, the riveted point of the pipe 4 and the fixing member 5 is located below the lock hole 52, and the swing rivet 3 also locates the stopper 2, which is the simplest structure; in practice, the rivet point may be located above the lock hole 52, and a separate rivet is required to position the stopper 2. In addition, the operation end 22 of the stopper 2 can be exposed at a section of the end of the pipe, or can be disposed at any position of the pipe, the pipe needs to be provided with a guide groove at the lower side of the rivet for positioning the stopper 2, and the operation end of the stopper 2 extends out of the guide groove of the pipe through a pin for operating unlocking at the outer side of the pipe. On the contrary, the double-stroke elastic buckle can also be arranged on one side of the fixing part 5, and the pipe fitting 4 is provided with a lock hole, so that the function is the same, and the orientation of the double-stroke elastic buckle can be kept.

Claims

1. A double-stroke V-shaped elastic buckle comprises an elastic buckle main body arranged in a pipe fitting, wherein the elastic buckle main body consists of a V-shaped reed and a convex pin which is arranged at one end part of the V-shaped reed and faces outwards; the method is characterized in that: a stopper is arranged in the pipe fitting at the lower side of the elastic buckle main body, can abut against the V-shaped reed upwards, is clamped between the V-shaped reed and the pipe wall, and forces the V-shaped reed with the convex pin to retract to a short stroke state, and can be automatically unlocked; the convex pin is automatically unlocked in place, the blocking piece loses the clamping force and can fall freely, the V-shaped reed is popped up again, and the convex pin is in a long-stroke state.

2. The double-stroke V-shaped buckle according to claim 1, wherein: the stopper comprises a contact end and an operating end, wherein the thickness or height of the contact end along the radial direction of the pipe fitting is greater than or equal to the difference between the long stroke and the short stroke of the convex pin, and the operating end is provided with a long slotted hole and is restrained in the pipe fitting by a rivet.

3. A two-stroke V-shaped clip according to claim 1 or 2, wherein: the stopper is formed by bending a metal sheet, the operating end is of a U-shaped structure, the abutting end extends from the U-shaped end of the operating end and forms an arc bending section, and the abutting end abuts against the surface of the V-shaped reed of the elastic buckle main body by virtue of the arc; the arc bending-out section of the contact end has a radial height along the pipe fitting which is greater than or equal to the difference between the long stroke and the short stroke of the convex pin.

4. A positioning structure comprising a pipe member, a fixing member, and the double-stroke V-shaped snap fastener according to any one of claims 1 to 3; the pipe fitting is positioned on the fixing piece through the rivet, can swing around the rivet and is locked on the fixing piece through a double-stroke V-shaped elastic buckle arranged in the pipe fitting; the method is characterized in that: the double-stroke V-shaped elastic buckle comprises an elastic buckle main body and a stopper, wherein the elastic buckle main body is arranged in the pipe fitting and consists of a V-shaped reed and a convex pin which is arranged at one end part of the V-shaped reed and faces outwards; the stopper is provided with a contact end and an operation end, and the operation end is provided with a long slotted hole; the rivet penetrates through the long slotted hole of the operating end, the stopper is constrained in the pipe fitting and is positioned at the lower side of the elastic buckle main body, the stopper can abut against the V-shaped reed upwards and is clamped between the V-shaped reed and the pipe wall, the V-shaped reed with the convex pin is forced to retract to a short stroke state, and the pipe fitting is allowed to swing and unlock; the convex pin is automatically unlocked in place, the blocking piece loses the clamping force and falls freely, the V-shaped spring leaf is popped up again, and the convex pin is in a long-stroke state, so that a reliable locking structure is formed.