CN212126141U

CN212126141U - Ribbon with self-locking structure

Info

Publication number: CN212126141U
Application number: CN202020737433.6U
Authority: CN
Inventors: 郑明维
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-11
Anticipated expiration: 2030-05-08

Abstract

The utility model discloses a ribbon with auto-lock structure, including strap and fixed head, the one end of strap be the stiff end, fixed mutually with the fixed head, its other end is for penetrating the end, the fixed head on be provided with the penetrating port and the penetrating port that run through mutually, fixed head internal fixation have a lock piece, the lock piece including fixed part and locking portion, fixed part and locking portion between be formed with deformation portion, the directional contained angle that penetrates the mouth direction of locking portion and strap be the acute angle. The utility model has the advantages that: when the penetrating end of the metal strip penetrates, the deformation part deforms, the locking part deflects towards the penetrating port side, the penetrating end can penetrate smoothly, and when the metal strip is pulled out reversely, the penetrating end surface abuts against the end face of the locking part to form self-locking. The utility model discloses a ribbon, low in manufacturing cost can form the auto-lock in the optional position, and it is very convenient to use.

Description

Ribbon with self-locking structure

Technical Field

The utility model belongs to the technical field of the ribbon technique of making and specifically relates to indicate a ribbon with auto-lock structure.

Background

A cable tie is a type of band used for bundling articles, which is widely used in various industries. Common ties include plastic ties and metal ties, depending on the material; because plastics are poor in heat resistance, corrosion resistance and ultraviolet light resistance, the application range of the plastic ribbon is limited, and the metal ribbon has a wider application range than the plastic ribbon.

The binding belt can meet the binding requirements in a general environment, but in some cases, the requirement on pulling and separating is high or the use environment is special (such as a vibration environment), the binding belt has higher requirements. In order to ensure the binding firmness of the binding tape, the binding and locking binding tape is generally subjected to a pull-out force test and a vibration pull-out force test (i.e., the pull-out force test is performed again in a simulated vibration environment). In order to improve the locking force of the ribbon, a steel ball is arranged in a lock catch, for example, the steel ball 200720195240.7 and 201320720451.3 adopt the structure, and the extrusion force of the steel ball on the ribbon body is improved through the matching of the steel ball and the inner inclined surface of the lock catch, so that the locking force of the ribbon is improved. The structure can improve the locking force of the ribbon and can pass the pull-off test of the ribbon; however, because the steel ball is not fixed in the lock catch, when the vibration tension test is carried out, the steel ball is easy to slide, so that the locking force is insufficient, and the steel ball cannot pass the vibration tension test.

As another patent 201720476803.3, the fixing groove is formed on the belt body, and the fixing is realized by inserting and matching the extrusion rod and the fixing groove; in addition like patent 201720489809.4, through setting up the lock door, be connected with the metal strip on the lock door, set up the circular port on the area body, it is fixed to join in marriage the realization through inserting of metal strip and circular port. The above-mentioned 2 patent locking structure essentials are similar, utilize the inserted bar (inserted bar) to join in marriage with inserting of fixed slot (fixed orifices) and realize fixedly, but because the setting of fixed slot (fixed orifices) is the spaced, consequently can't realize the locking of optional position, and this can cause very big trouble in the use of ribbon, can lead to the unable effective locking of ribbon.

Disclosure of Invention

The utility model aims to solve the technical problem that to prior art's current situation, provide simple structure, convenient to use can form a ribbon with auto-lock structure of auto-lock in the optional position.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a ribbon with auto-lock structure, including strap and fixed head, the one end of strap be the stiff end, fixed mutually with the fixed head, its other end is for penetrating the end, the fixed head on be provided with the mouth of penetrating that runs through mutually and wear the export, fixed head internal fixation have a locking piece, the locking piece including fixed part and locking portion, fixed part and locking portion between be formed with deformation portion, locking portion and strap penetrate the end directional contained angle that penetrates the mouth direction and be the acute angle.

The optimized technical measures further comprise:

the range of the included angle is as follows: the included angle alpha is more than or equal to 70 degrees and less than 90 degrees.

The deformation part is an elastic part which enables the locking part to move elastically towards the direction of the penetration opening.

The fixing part is positioned on the side of the penetration port, and the locking part is positioned on the side of the penetration port.

The two ends of the fixing part are respectively connected with a locking part.

The fixed head on punching press form the fixed slot, the middle part of the fixed part of lock piece seted up the socket, the both sides of this socket are provided with a pair of fixed oblique piece, the lock piece be fixed in the fixed head through the card cooperation of fixed oblique piece and fixed slot.

The fixing head is provided with an opening at one end, the fixing head is punched to form a fixing block, a clamping groove is formed in the fixing block, a fixing part of the locking piece is provided with an insertion hole and an inclined clamping piece, and the locking piece is fixed in the fixing head through the inclined clamping piece and the clamping groove in a clamping fit mode.

The locking part is vertically provided with a reinforcing rib along the locking part.

The two sides of the locking part are bent to form reinforcing edges.

The utility model relates to a ribbon with self-locking structure, simple structure, it is through fixing the locking piece in the fixed head, the locking piece includes fixed part, deformation portion and locking portion, and the locking portion is acute angle with the penetrating end of strap directional penetrating mouth direction one-tenth contained angle; when the penetrating end of the metal strip penetrates, the deformation part deforms, the locking part deflects towards the penetrating port side, the penetrating end can penetrate smoothly, and when the metal strip is pulled out reversely, the penetrating end surface abuts against the end face of the locking part to form self-locking. The utility model discloses a ribbon, low in manufacturing cost can form the auto-lock in the optional position, and it is very convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a partial cross-sectional structural view of a first embodiment of the present invention;

fig. 3 is a perspective view of a lock member according to a first embodiment of the present invention;

FIG. 4 is a force analysis diagram of portion P of FIG. 2;

fig. 5 is a schematic structural diagram of a second embodiment of the present invention;

fig. 6 is a partial sectional structural view of a second embodiment of the present invention;

fig. 7 is a perspective view of a lock member according to a second embodiment of the present invention;

fig. 8 is a partial sectional structural view of a third embodiment of the present invention;

fig. 9 is a partial sectional structural view of a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 9, the structure of the present invention is schematically illustrated,

wherein the reference numerals are: the angle α, the metal band 1, the fixed end 11, the penetrating end 12, the fixed head 2, the penetrating port 2a, the penetrating port 2b, the fixed groove 21, the fixed block 22, the slot 22a, the locking piece 3, the fixed portion 31, the socket 31a, the fixed inclined piece 31b, the inserting port 31c, the inclined clamping piece 31d, the locking portion 32, the reinforcing rib 32a, the reinforcing edge 32b, and the deformation portion 33.

In one embodiment, as shown in FIGS. 1 to 3,

the utility model provides a ribbon with auto-lock structure, is including strap 1 and fixed head 2, the one end of strap 1 be stiff end 11, fixed mutually with fixed head 2, its other end is for penetrating end 12, fixed head 2 on be provided with the mouth 2a that penetrates mutually and wear out the mouth 2b, fixed head 2 internal fixation have locking piece 3, locking piece 3 including fixed part 31 and locking portion 32, fixed part 31 and locking portion 32 between be formed with deformation portion 33, locking portion 32 and strap 1 penetrate that end 12 points to and wear into mouth 2a direction contained angle alpha and be the acute angle.

The metal belt 1 can be a stainless steel belt, an iron belt, a copper belt or a stainless steel woven belt.

In order to ensure that the penetrating end 12 of the metal strip 1 can pass through the fixing head 2 smoothly, the locking member 3 needs to be deformable when the penetrating end 12 passes through, and after the band is locked, the locking portion 32 needs to have sufficient rigidity in order to prevent the penetrating end 12 from being pulled out.

In this embodiment, the two ends of the fixing portion 31 are respectively connected to the locking portions 32; in this way, the locking portions 32 are provided at both ends of the locking member 3, respectively, to form a double locking structure, which can further improve the locking force. The assembly structure of the locking piece 3 and the fixing head 2 is as follows: the fixing head 2 is punched to form a fixing groove 21, a socket 31a is formed in the middle of a fixing part 31 of the locking piece 3, a pair of fixing inclined pieces 31b are arranged on two sides of the socket 31a, and the locking piece 3 is fixed in the fixing head 2 through the clamping and matching of the fixing inclined pieces 31b and the fixing groove 21.

When the fixing head 2 is half-formed (the bottom is opened), the locking piece 3 is pushed into the fixing groove 21 of the fixing head 2 from bottom to top, because the fixing inclined piece 31b is obliquely arranged and has certain elasticity, the fixing inclined piece 31b can be pushed into the fixing groove 21 from bottom to top, the fixing groove 21 extends into the socket 31a until the fixing inclined piece 31b reaches the upper part of the bottom edge of the fixing groove 21, and the fixing inclined piece 31b is inwardly folded to form clamping fit with the fixing groove 21; after the locking piece 3 is assembled, the bottom of the fixing head 2 is bent and formed.

Preferably, a reinforcing rib 32a is vertically arranged on the locking part 32 along the locking part 32. The number of the reinforcing ribs 32a may be one, two or more. The provision of the reinforcing rib 32a can increase the rigidity of the lock portion 32, and reduce the amount of material used in the case of satisfying the rigidity requirement. Of course, the reinforcing edge 32b of the second embodiment may be used to increase the rigidity of the locking portion 32.

When the penetrating end 12 of the metal strip 1 penetrates through the penetrating port 2a of the fixing head 2, the deformation part 33 of the locking part 32 is formed, the locking part 32 deflects toward the penetrating port 2b, and the penetrating end 12 of the metal strip 1 can smoothly penetrate. When the metal band 1 is pulled out reversely to the penetrating port 2b, the locking part 32 is rigid and does not deform, the upper part of the deformation part 33 is blocked by the inner wall of the fixing head 2, the locking part 32 cannot deflect towards the penetrating port 2a, the surface of the penetrating end 12 of the metal band 1 is abutted to the end face of the locking part 32, and the locking part 32 is clamped between the penetrating end 12 of the metal band 1 and the inner wall of the fixing head 2, so that the binding band is locked.

The end face of the locking part 32 is in line contact with the surface of the penetrating end 12 of the metal strip 1, so that the contact points are increased, and the locking force is improved.

As shown in fig. 4, the structure was subjected to mechanical analysis:

when the locked metal strap 1 is pulled out in the direction of the insertion port 2a, since the lock portion 32 is a rigid member, the force is transmitted in the direction of the lock portion 32, assuming that the force acting on the lock portion 32 is F, the component forces in the X-axis direction and the Y-axis direction are respectively F1 and F2, F1= cos α F, and F2= sin α F, where F2 is balanced with the pressure of the lock portion 32 against the lock portion 32; a friction force F exists between the metal belt 1 and the end face of the locking part 32, F = u sin α F, u is a friction coefficient, and the friction coefficient u mainly depends on the roughness of the surface of the metal belt 1; to prevent the metal strip 1 from being pulled out, F > F1, i.e = u sin α F > cos α F, needs to be satisfied, yielding u > cot α.

The function cot alpha is monotonically decreased within the range of 0-90 degrees when alpha is taken, namely the closer alpha is to 90 degrees, the smaller the value of cot alpha is, the smaller the requirement on the friction coefficient u is, therefore, theoretically, the closer alpha is to 90 degrees, and the more favorable the locking of the metal belt 1 is.

The range of the included angle alpha is preferably as follows: the included angle alpha is more than or equal to 70 degrees and less than 90 degrees.

Preferably, the deformation portion 33 is an elastic portion having elasticity for moving the locking portion 32 in the direction of the insertion port 2 a.

When the deformation portion 33 is an elastic portion, the locking portion 32 is made to have elasticity to move in the direction of the insertion port 2a, so that the locking portion 32 has a force to deflect in the direction of the insertion port 2a, and the pressure of the locking portion 32 acting on the surface of the metal strip 1 is increased, that is, the Y-axis direction component force F2= sin α F is increased. Deriving u sin alpha F > cos alpha F from the condition F > F1, namely u > cos alpha F/sin alpha F; sin α F increases, the cos α F/sin α F value decreases, and the requirement for the coefficient of friction u decreases. Therefore, the deforming portion 33 is an elastic portion having elasticity for moving the locking portion 32 in the direction of the insertion opening 2a, and is advantageous for locking the metal strap 1.

In order to increase the friction coefficient u, a sand blast layer may be formed by sand blasting on the contact surface of the penetrating end 12 of the metal strip 1 with the lock portion 32.

In the second embodiment, as shown in fig. 5 to 7,

the cable tie of the second embodiment is similar to the cable tie of the first embodiment in structure, and also adopts a double locking structure, and locking parts 32 are respectively connected to two ends of the fixing part 31. The assembly structure of the locking piece 3 and the fixing head 2 is as follows: one end of the fixing head 2 is open, the fixing head 2 is stamped to form a fixing block 22, a clamping groove 22a is formed in the fixing block 22, an insertion hole 31c and an inclined clamping piece 31d are formed in a fixing part 31 of the locking piece 3, and the locking piece 3 is fixed in the fixing head 2 through clamping of the inclined clamping piece 31d and the clamping groove 22 a.

In this embodiment, the installation of locking piece 3 is more convenient, and behind the locking piece 3 preparation shaping, the inserted hole 31c of locking piece 3 is pushed in from the open end inwards, and fixed block 22 on the fixed head 2 penetrates in the inserted hole 31c, because oblique card 31d slope sets up and has certain elasticity, fixed block 22 continues to stretch into, it can to form fixedly until oblique card 31d card income draw-in groove 22 a. The secondary forming step of the fixing head 2 is omitted, and the processing is more convenient.

Preferably, the two sides of the locking portion 32 are bent to form a reinforcing edge 32 b. The reinforcing edge 32b is also provided to increase the rigidity of the locking portion 32. Of course, the reinforcing rib 32a structure of the first embodiment may be adopted to increase the rigidity of the locking portion 32.

In the third embodiment, as shown in fig. 8,

in the embodiment, a single locking structure is adopted, the locking piece 3 is an integral structure made of metal strips, the fixing part 31 is positioned on the side of the penetration port, the locking part 32 is positioned on the side of the penetration port, the fixing part 31 and the fixing head 2 are fixed by welding, and when one end of a long and thin strip-shaped object is fixed, the other end which is not fixed can naturally deform to form the deformation part 33; the locking piece 3 is made of metal strips, so that the locking piece is convenient to process and low in manufacturing cost.

In the fourth embodiment, as shown in fig. 9,

in this embodiment, a single locking structure is adopted, the fixing portion 31 is located on the side of the penetration port, and the locking portion 32 is located on the side of the penetration port.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a ribbon with auto-lock structure, including strap (1) and fixed head (2), the one end of strap (1) be stiff end (11), fixed mutually with fixed head (2), its other end is for penetrating end (12), fixed head (2) on be provided with penetrating mouth (2a) and penetrating mouth (2b) that run through mutually, characterized by: fixed head (2) internal fixation have lock piece (3), lock piece (3) including fixed part (31) and lock portion (32), fixed part (31) and lock portion (32) between be formed with deformation portion (33), lock portion (32) and metal band (1) penetrate end (12) point-to-point and wear into mouth (2a) direction contained angle (alpha) and be the acute angle.

2. The tie with the self-locking structure as claimed in claim 1, wherein: the range of the included angle (alpha) is as follows: the included angle (alpha) is more than or equal to 70 degrees and less than 90 degrees.

3. The cable tie with the self-locking structure as claimed in claim 2, wherein: the deformation part (33) is an elastic part which enables the locking part to move elastically towards the direction of the penetration opening.

4. A tie with self-locking feature as claimed in claim 3 wherein: the fixing part (31) is positioned at the side of the penetration port, and the locking part (32) is positioned at the side of the penetration port.

5. A tie with self-locking feature as claimed in claim 3 wherein: the fixing part (31) is positioned at the side of the penetration port, and the locking part (32) is positioned at the side of the penetration port.

6. A tie with self-locking feature as claimed in claim 3 wherein: two ends of the fixing part (31) are respectively connected with a locking part (32).

7. The tie with the self-locking structure as claimed in claim 6, wherein: fixed head (2) on punching press form fixed slot (21), the middle part of fixed part (31) of locking piece (3) seted up socket (31a), the both sides of this socket (31a) are provided with a pair of fixed sloping piece (31b), locking piece (3) through fixed sloping piece (31b) with the card of fixed slot (21) join in marriage be fixed in fixed head (2).

8. The tie with the self-locking structure as claimed in claim 6, wherein: fixed head (2) one end opening, fixed head (2) go up the punching press and form fixed block (22), be provided with draw-in groove (22a) on this fixed block (22), fixed part (31) of locking piece (3) on be provided with inserted hole (31c) and oblique card (31d), locking piece (3) be fixed in fixed head (2) through the card cooperation of oblique card (31d) and draw-in groove (22 a).

9. A tie with a self-locking structure according to any one of claims 1 to 8, wherein: and reinforcing ribs (32a) are vertically arranged on the locking part (32) along the locking part (32).

10. A tie with a self-locking structure according to any one of claims 1 to 8, wherein: both sides of the locking part (32) are bent to form a reinforcing edge (32 b).