CN101161972A - Butt hinge of folding case and folding case - Google Patents

Abstract

The invention provides a gemel of a folding carton and the folding carton, wherein, the gemel comprises a fixed flap, a movable flap, a rotating pin, a lock pin and an elastic locking device. The fixed flap is provided with a fixed pivotal hole and a fixed locking hole; the movable flap is correspondingly provided with a movable pivotal hole and a movable locking hole; the rotating pin is inserted in the fixed pivotal hole and the movable pivotal hole to connect the fixed flap and the movable flap in a pivotal way; the lock pin can be inserted in and separate from the fixed locking hole and the movable locking hole; the elastic locking device is connected between an underframe of the folding carton and the lock pin; the elasticity of the elastic locking device forces the lock pin to be in parallel move toward the direction along which the lock pin is inserted in the fixed locking hole and the movable locking hole. The invention ensures the safety and reliability of the locking of the gemel with easy and efforts-saving operation, shortened operating time and enhanced working efficiency.

Description

Folding box hinges and folding boxes

technical field

The invention relates to a component of a container, in particular to a hinge device of a folding box.

The invention also relates to a folding box incorporating such a hinge arrangement.

Background technique

In the field of containers, folding boxes are widely used because of their small stacking space after folding, low cost of empty container transshipment, and convenient loading and unloading of goods.

As early as the mid-1970s, folding boxes have been designed, researched, and applied. However, the folding boxes at that time were transformed from dry cargo boxes. When carrying a load, they were used as a complete dry cargo box. The side walls are folded inward respectively, and then the top plate is put on, and then the end walls at both ends are folded toward the inside of the box. Although it can save the transportation cost of the empty box, the box type lacks universality due to the complicated operation; until the end of the 1970s , The hinge of the folding box was successfully launched, which made the box type widely used.

As shown in Figures 1 to 3, the existing folding box includes: a chassis 1' for carrying goods, an end wall 2' pivotally connected to the two ends of the chassis 1', and an end wall 2' for pivotally connecting the chassis 1'. The hinge device 3' with the end wall 2', and the corner fittings 4' arranged at each end corner of the box body.

Corner columns 21' are arranged on both sides of the end wall 2'.

The hinge device 3' comprises: a fixed hinge plate 31', a movable hinge plate 32', a lock pin 33' and a slide hammer 34'; the movable hinge plate 32' is fixedly connected to the bottom of the corner post 21'; The side of the end corner of 1' is fixedly connected, and the corner piece 4' is fixedly connected to the bottom of the fixed hinge plate 31'; the fixed hinge plate 31' is set outside the movable hinge plate 32'; the fixed hinge plate 31' and the movable hinge plate 32' The fixed pivot hole 311' and the movable pivot hole 321' are respectively facing and matched, and the revolving pin 35' is pivotally inserted in the fixed pivot hole 311' and the movable pivot hole 321', so that the fixed hinge The plate 31' and the movable hinge plate 32' are pivotally connected into one body, and the movable hinge plate 32' can rotate relative to the fixed hinge plate 31' with the rotating pin 35' as the axis, so that the end wall 2' can rotate relative to the end angle of the bottom frame 1' , to realize the folding and erecting of the end wall 2'; in order to maintain the stability of the end wall 2' after erection, a fixed locking hole 312' and a movable hinge plate are correspondingly provided on the fixed hinge plate 31' and the movable hinge plate 32'. The locking hole 322', when the end wall 2' stands up, the sliding hammer 34' sleeved on the locking pin 33' knocks the baffle plate 331' on the locking pin 33' to push the locking pin 33' to move, and the locking pin 33' Insert it into the fixed locking hole 312' and the movable locking hole 322' to lock the hinge, ensuring the stability of the end wall 2' when it is erected; when the end wall 2' needs to be folded, use the sliding hammer 34' to strike in the opposite direction The baffle plate 331' enables the locking pin 33' to withdraw from the fixed locking hole 312' and the movable locking hole 322' so that the end wall 2' can be brought down.

But the weight of the end wall 2' of the folding box is between 400 kg and 500 kg, and in the operation of inserting the lock pin and withdrawing from the lock pin, the resistance generated by the weight is relatively large, that is to say, the existing Although the hinge device can well realize the locking of the erected state of the end wall, the operation is relatively laborious and time-consuming, and the operator may forget to move the lock pin to lock the hinge due to the negligence of the operator during operation, causing potential safety hazards.

To sum up, the existing hinge device of folding box has inconvenience and defects in actual application, and it is necessary to improve it.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a hinge device for a folding box that ensures safe and reliable hinge locking, is easy to operate, saves labor, and can shorten operating time to improve work efficiency.

To achieve the above object, the technical scheme of the present invention is as follows:

A hinge for a folding box, comprising:

A fixed hinge plate is provided with a fixed pivot hole and a fixed locking hole;

A movable hinge plate, on which a movable pivot hole and a movable locking hole are correspondingly provided on the movable hinge plate;

A revolving pin is inserted into the fixed pivot hole and the movable pivot hole to pivotally connect the fixed hinge plate and the movable hinge plate;

A lock pin can be inserted into and disengaged from the fixed locking hole and the movable locking hole;

Elastic locking device, the elastic locking device is connected between the bottom frame of the folding box and the locking pin, the elastic force of the elastic locking device is to force the locking pin to insert into the fixed locking hole and the movable locking hole panning.

In a preferred solution of the present invention, the hinge of the folding box, wherein the elastic locking device includes a spring, and the spring is connected between the locking pin and the bottom frame of the folding box.

The hinge of the folding box, wherein the spring is a compression spring, and the elastic locking device further includes:

a sleeve, fixed on the bottom frame of the folding box, one end of the sleeve fits on the locking pin; and

The adjustment rod is inserted into the other end of the sleeve. The adjustment rod includes a pressing part and an adjusting part connected in a "T" shape. The adjusting part is screwed into the end face of the sleeve. The pressing part is located on the sleeve middle;

One end of the compression spring abuts against the pressing portion of the adjusting rod, and the other end abuts against the end surface of the locking pin.

The hinge of the folding box, wherein the spring is a tension spring, one end of the tension spring is hung on the hanging post arranged on the lock pin, and the other end is hung on the hanging post fixedly connected to the said lock pin. On the hanging post on the bottom frame of the folding box, the hanging post on the lock pin is far away from the fixed hinge plate and the hanging post on the bottom frame of the folding box is closer to the fixed hinge plate.

The hinge of the folding box, wherein, the hinge further includes a pedal, and the pedal is connected and interlocked with the lock pin.

The hinge of the folding box, wherein, the top of the pedal is provided with a chute, and the sliding pin is inserted into the chute of the pedal and fixedly connected to the lock pin. The pedal is connected to the lock pin A position on the pedal below the chute is pivotally connected to the bottom frame of the folding box through a pivot pin.

The hinge of the folding box, wherein, the middle part of the pedal is pivotally connected to the bottom frame of the folding box through a pivot pin, and a column is fixed on the locking pin to match the top of the pedal , the top of the pedal is connected in conflict with the column.

The hinge of the foldable box, wherein, the bottom frame of the foldable box is provided with a limit baffle corresponding to the pedal.

The hinge of the folding box, wherein the lock pin includes:

The base is a long rod-shaped member with a rectangular cross-section, and the middle part of the base is provided with a mounting hole for pin connection with the pedal;

a locking portion extending outward from an end of the base portion close to the fixed hinge plate; and

The spring seat is arranged at the other end of the base.

The hinge of the folding box, wherein, the locking portion of the locking pin is a cone that gradually shrinks along the extension direction, and the outer end of the locking portion is set as an inclined plane, and the inclined plane faces upwards. The outermost end is a smooth transition part.

The hinge of the folding box, wherein, the friction plate is installed on the slope.

In the hinge of the folding box, the base of the lock pin is fitted with a sliding hammer and a hammering plate, and the bottom frame is matched with a pivoting clamping plate corresponding to the hammering plate.

In the hinge of the folding box, the fixed locking hole and the movable locking hole are both matched with the locking part of the locking pin to form a tapered hole with one end larger and the other end smaller.

The hinge of the folding box, wherein, a pressing block is provided under the big end of the movable locking hole of the movable hinge plate, the pressing block is a semi-cylindrical body, and the circumferential surface of the pressing block faces the locking pin .

The hinge of the folding box, wherein, a pressing block is provided below the big end of the movable locking hole of the movable hinge plate, and the pressing block is a block with an inclined surface, and the inclined surface of the pressing block is aligned with the lock The slopes of the locking parts of the pins match and have the same slope.

A folding box, comprising a bottom frame, a corner post, a hinge pivotally connected between the corner post and the bottom frame, and corner pieces installed on the bottom frame and the corner post; the hinge includes:

A fixed hinge plate is provided with a fixed pivot hole and a fixed locking hole;

A movable hinge plate, on which a movable pivot hole and a movable locking hole are correspondingly provided on the movable hinge plate;

A revolving pin is inserted into the fixed pivot hole and the movable pivot hole to pivotally connect the fixed hinge plate and the movable hinge plate;

A lock pin can be inserted into and disengaged from the fixed locking hole and the movable locking hole;

The hinge further includes an elastic locking device, which is connected between the bottom frame of the folding box and the locking pin, and the elastic force of the elastic locking device forces the locking pin to insert into the fixed locking hole and the locking pin. Orientation translation in active lock holes.

The folding box, wherein the elastic tightening device is a compression spring, and the elastic locking device further includes:

a sleeve, fixed on the bottom frame of the folding box, one end of the sleeve fits on the locking pin; and

The adjustment rod is inserted into the other end of the sleeve. The adjustment rod includes a pressing part and an adjusting part connected in a "T" shape. The adjusting part is screwed into the end face of the sleeve. The pressing part is located on the sleeve middle;

One end of the compression spring abuts against the pressing portion of the adjusting rod, and the other end abuts against the end surface of the locking pin.

The folding box described above, wherein the elastic locking device is a tension spring, one end of the tension spring is hung on the hanging post arranged on the lock pin and the other end is hung on the hanging post fixedly connected to the On the hanging post on the bottom frame of the folding box, the hanging post on the lock pin is far away from the fixed hinge plate and the hanging post on the bottom frame of the folding box is far away from the fixed hinge plate. close.

In the folding box, the hinge further includes a pedal, and the pedal is connected and interlocked with the lock pin.

The folding box, wherein, the top of the pedal is provided with a chute, and the sliding pin is inserted into the chute of the pedal and fixedly connected to the locking pin. The pedal is connected to the locking pin. A position on the pedal below the chute is pivotally connected to the bottom frame of the folding box through a pivot pin.

The folding box, wherein, the middle part of the pedal is pivotally connected to the bottom frame of the folding box through a pivot pin, and a column is fixed on the locking pin to match the top end of the pedal, the The top of the pedal is connected in conflict with the column.

Technical scheme of the present invention has following advantage:

On the one hand, when the end wall is turned from the folded state to the erected state, the pressing block of the movable hinge plate is pressed against the slope of the lock pin. The process of locking and moving the locking hole is done automatically, thereby avoiding the situation that the operator forgets to lock the hinge, and improving the safety of the hinge device operation;

On the other hand, when the end wall is turned from the erect state to the folded state, the operator can use both hands to push the end wall down while stepping on the pedal with his feet, that is, the action of the lock pin withdrawing from the locking hole and pushing the end wall It can be carried out synchronously, which is simpler and time-saving than the operation of using a slide hammer to push the lock pin out of the taper hole and then pushing down the end wall in the prior art.

Description of drawings

In order to further understand the features and technical content of the present invention, please refer to the following drawings related to the present invention. However, the attached drawings are provided for reference and illustration only, and are not intended to limit the present invention.

Fig. 1 is the structural representation of existing folding box;

Fig. 2 is an enlarged view of an end corner of an existing folding box;

Fig. 3 is an exploded schematic view of a hinge device of an existing folding box;

Fig. 4 is a schematic structural view of the first embodiment of the hinge of the folding box of the present invention, and what is shown in the figure is also an enlarged view of the end corner of the folding box, and part of the components shown in the figure are cross-sectional views, and in the figure The hinge is in the upright locked state;

Fig. 5 is the B direction view of Fig. 4;

Fig. 6A is a schematic structural view of the lock pin in Fig. 4, the position of the lock pin in the figure is the same as that in Fig. 4;

Figure 6B is a top view of Figure 6A;

Figure 6C is a partially enlarged view of the lock pin, in which a friction plate is added to the locking part of the lock pin;

Fig. 7 is A-A sectional view of Fig. 4;

Fig. 8A is a structural schematic diagram of the living hinge plate in Fig. 5;

Fig. 8B is a C-C sectional view of Fig. 8A;

Fig. 9 is a schematic diagram of the hinge in Fig. 4 in a folded state;

Fig. 10 is a schematic diagram of the hinge in Fig. 4 in a state to be erected;

Fig. 11 is a schematic diagram of the hinge in Fig. 4 in a state to be erected;

Fig. 12 is a schematic structural view of a second embodiment of the hinge of the present invention;

Fig. 13 is a schematic structural view of a third embodiment of the hinge of the present invention;

Fig. 14 is a D-D sectional view of Fig. 13;

Fig. 15 is the E-E sectional view of Fig. 13;

Fig. 16 is a schematic structural view of a fourth embodiment of the hinge of the present invention;

Fig. 17 is a schematic structural view of a fifth embodiment of the hinge of the present invention;

Fig. 18 is the F-F sectional view of Fig. 17;

Fig. 19 is a schematic structural view of the sixth embodiment of the hinge of the present invention;

Fig. 20 is a G-G sectional view of Fig. 19 .

Each label in the accompanying drawing is:

current technology:

1′ Chassis

2′ end wall

21′ corner post

3' hinge device

31' fixed hinge plate

311' fixed pivot hole 312' fixed locking hole

32' living hinge plate

321' movable pivot hole 322' movable locking hole

33' locking pin

331' baffle

34' slide hammer

35' resale

4′ corner post

this invention:

1 chassis

11 vertical board 12 support seat 13 card board 14 hanging column 15 bottom corner piece

2 fixed hinge plates

21 Fixed pivot hole 22 Fixed locking hole

3 living hinge plates

31 movable pivot hole 32 movable locking hole 33 pressing block

4 resale

5 lock pins

51 base

511 mounting holes

52 spring seat

53 lock part

531 inclined plane 532 transition part 533 friction plate

54 sliding hammer 55 hammer plate

56 hanging columns

57 spring baffle

58 columns

6 pedals

61 sliding pin 62 pivoting pin 63 chute 64 limit baffle

7 elastic locking device

71 sleeve

72A compression spring 72B tension spring

73 adjustment lever

731 Department of Compression 732 Department of Regulation

8 operator's feet

9 corner columns

Detailed ways

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings.

The hinge of the present invention is pivotally connected between the bottom frame 1 and the corner post of the end wall, so that the end wall and the corner post can be erected and folded relative to the bottom frame. The originality of the present invention lies in the structure of the hinge of the folding box. The structure of other parts of the box will not be repeated here.

[Example 1]

4 to 11 show the first embodiment of the present invention.

The hinge of the folding box of the present invention comprises: a fixed hinge plate 2, a movable hinge plate 3, a revolving pin 4, a lock pin 5, a pedal 6 and an elastic locking device 7;

In this embodiment and other embodiments of the present invention, the movable hinge plate 3 is fixedly connected to the bottom of the corner post 9; the fixed hinge plate 2 is fixedly connected to the side of the end corner of the chassis 1, and the bottom corner piece 15 is fixedly connected At the bottom of the fixed hinge plate 2.

The fixed hinge plate 2 is set on the outside of the movable hinge plate 3; the fixed hinge plate 2 is provided with a fixed pivot hole 21, and the movable hinge plate 3 is correspondingly provided with a movable pivot hole 31, see Fig. 5 and Fig. 8A, turn The pin 4 is inserted in the fixed pivot hole 21 and the movable pivot hole 31 to pivotally connect the fixed hinge plate 2 and the movable hinge plate 3, and the movable hinge plate 3 can rotate relative to the fixed hinge plate 2 with the revolving pin 4 as an axis;

The fixed hinge plate 2 is provided with a fixed locking hole 22, and the movable hinge plate 3 is correspondingly provided with a movable locking hole 32. When the end wall is erected, as shown in FIGS. For the fixed locking hole 22, the lock pin 5 is inserted in the fixed locking hole 22 and the movable locking hole 32, and the movable hinge plate 3 is locked so that the movable hinge plate 3 can no longer rotate, so that the movable hinge plate 3 and the end wall are erected. stable; the lock pin 5 breaks away from the fixed locking hole 22 and the movable locking hole 32, then releases the locking of the movable hinge plate 3, and the movable hinge plate 3 and the end wall can be turned down; the fixed locking hole 22 and the movable locking hole 32 are both Tapered hole with big inside and small outside;

The structure of the lock pin 5 is shown in Figure 6A and Figure 6B, including a base 51, a spring seat 52 and a locking part 53; The mounting hole 511 connected by the pin; the locking portion 53 extends from the end of the base portion 51 close to the fixed hinge plate 3 to the direction of the fixed hinge plate 3, the locking portion 53 is a cone that gradually shrinks along the extending direction, and the locking portion 53 Outer end is provided with an inclined plane 531, when lock pin 5 is assembled on the folding box, the inclined plane 531 of locking part 53 is upwards, and the outermost end of inclined plane 531 is a smooth transition part 532; In order to guarantee that locking part 53 can smoothly inserted into the fixed locking hole 22 and the movable locking hole 32, theoretically the conical locking part 53 and the tapered fixed locking hole 22 and the movable locking hole 32 should be coaxial;

Considering that the friction between the pressure block 33 and the inclined surface 531 of the locking part 53 is relatively large, the inclined surface 531 is vulnerable, as shown in Figure 6C, a friction plate 533 can be installed on the inclined surface 531, and the friction plate 533 is selected from high-strength and durable Abrasive material preparation, the pressing block 33 is directly pressed against the friction plate 533, and the friction plate 533 can be replaced after wear; the spring seat 52 is arranged at the other end of the base 51;

The structure of the living hinge plate 3 is shown in Figure 8A and Figure 8B. A briquetting block 33 is arranged below the large end of the movable locking hole 32. The briquetting block 33 is a semi-cylindrical body. When the living hinge plate 3 is erected, the briquetting block 33 The semicircular face of the briquetting box is facing down and its axis is in the same direction as the length direction of the folding box, that is to say, the circumferential surface of the briquetting block 33 is facing the lock pin 5; The slope matches the slope 531 of the locking pin 5 and has the same slope;

The structure and installation of the pedal 6 are shown in Figure 4 and Figure 7, the pedal 6 is a bent member; the top of the pedal 6 is provided with a chute 63, and the sliding pin 61 is inserted in the chute 63 of the pedal 6 and fixed on the In the mounting hole 511 of the lock pin 5, the pedal 6 is connected to the base 51 of the lock pin 5; the position below the chute 63 on the pedal 6 is pivotally connected to the support seat provided at the end of the chassis 1 through the pivot pin 62 12. The support seat 12 can be set on the bottom frame 1 or directly adopt a suitable structure of the bottom frame 1; the pedal 6 can rotate around the pivot pin 62, and then through the cooperation of the chute 63 and the sliding pin 61, the lock pin can be driven 5 translation;

The structure and installation of the elastic locking device 7 are shown in Figure 4, including a sleeve 71, a compression spring 72A and an adjustment rod 73; the sleeve 71 is fixed on the vertical plate 11 at the end of the chassis 1, and one end of the sleeve 71 is sleeved on On the spring seat 52 and part of the base 51 of the lock pin 5; the adjusting rod 73 is inserted into the other end of the sleeve 71, and the adjusting rod 73 includes a pressing part 731 and an adjusting part 732 connected in a "T" shape, and the adjusting part 732 is screwed In the end face of the sleeve 71, the pressing part 731 is located in the sleeve; one end of the compression spring 72A abuts against the pressing part 731 of the adjustment rod 73, and the other end is set on the spring seat 52 of the lock pin 5 and abuts against the base 51 Thus, the elastic force of the compression spring 72A forces the locking pin 5 to translate in the direction inserted into the fixed locking hole 22 and the movable locking hole 32, and the pressing part 731 of the adjusting rod 73 can be adjusted in the sleeve 71 by twisting the adjusting rod 73. Change the compression elastic force of the compression spring 72A when it works.

The working process of the hinge of the present invention is shown in Figures 9 to 11;

As shown in Figure 9, when it is necessary to put the movable hinge plate 3 (that is, put it on the end wall), the operator's foot 8 steps down the pedal 6, and the pedal 6 rotates with the pivot pin 62 as the axis, and the slide pin 61 Slide in the chute 63, and push the lock pin 5 to move to the left (as shown by the arrow in the figure), so that the locking part 53 withdraws from the fixed locking hole 22 and the movable locking hole 32, and the compression spring 72A is compressed at the same time, so that the compression spring 72A It is in the state of energy storage; here, in order to control the withdrawal distance of the locking part 53 and prevent unnecessary travel of the pedal 6, it is necessary to set the limit baffle 64 of the pedal, and the limit baffle 64 is fixedly connected to the end of the chassis 1 When the pedal 6 is pressed against the limit baffle 64, the locking part 53 is completely withdrawn from the fixed locking hole 22 and the movable locking hole 32. At this time, the operator can push the end wall with both hands (with the movable hinge plate 3 fixed connection), push down the end wall, after the end wall is pushed down, the movable locking hole 32 and the fixed locking hole 22 are staggered, the operator can loosen the foot 8, and the locking pin 5 is only inserted and fixed under the return thrust of the compression spring 72A in the locking hole 22;

As shown in Figures 10 and 11, when the end wall is to be erected, the movable hinge plate 3 is pressed against the fixed hinge plate 2, and the pressing block 33 on the movable hinge plate 3 is pressed against the slope 531 of the locking portion 53 of the lock pin 5 , under the effect of the gravity of the end wall, the inclined surface 531 is subjected to the horizontal component force of the gravity of the end wall transmitted by the pressure block 33, so that the lock pin 5 overcomes the elastic force of the compression spring 72A and moves horizontally to the left (as shown by the arrow in Figure 10 direction), at the same time the locking portion 53 begins to withdraw from the fixed locking hole 22, and the pressing block 33 continues to press down, and the pressing down causes the locking portion 53 to move left to the transition portion 532 at its outer end to slide over the semi-cylindrical surface of the pressing block 33 or After the leftmost point of the slope, under the elastic force of the compression spring 72A, the lock pin 5 starts to move to the right (as shown by the arrow in Figure 11), and finally the locking part 53 is inserted into the fixed locking hole 22 and the movable locking hole 32 , to realize the locking of the living hinge plate 2, so that the end wall of the folding box is stably kept in an upright state.

[Example 2]

What Fig. 12 shows is the second embodiment of the present invention, its structure is the same as that of the first embodiment, and a slide hammer 54 is added. In order to make the locking of the movable hinge plate 3 and the fixed hinge plate 2 by the lock pin 5 more reliable, a sliding hammer 54 is set on the base 51 of the lock pin 5, a hammering plate 55 is arranged on the base, and a locking part of the lock pin 5 After 53 is inserted in the fixed locking hole 22 and the sub-lock 32, knock the hammer plate 55 with a slide hammer 54 to make the locking of the movable hinge plate 3 and the fixed hinge plate 2 more reliable. The clamping plate 13 connected by the pin, at this moment, the clamping plate 13 can just lean against the inner side of the hammering plate 55 to prevent the locking pin 5 from receding and cause the locking of the movable hinge plate and the fixed hinge plate to be unstable.

[Example 3]

What Fig. 13 to Fig. 15 shows is the third kind of embodiment of the present invention, and its structure is similar to the first kind of embodiment, and difference lies in the structure and installation of elastic locking device 7, and elastic locking device only comprises stretching Spring 72B, one end of tension spring 72B is hung on the hanging column 56 that is located on the base 51 of lock pin 5, and its other end is hung on the hanging column 14 that is fixedly connected to the end of the chassis 1, and the hanging column 14 is located at a position closer to the fixed hinge plate 2 and the hanging column 56 is located at a position farther from the fixed hinge plate 2; the structure of the spring seat 52 of the lock pin 5 can be omitted, and this end of the lock pin 5 directly passes through the set plate 11 on. The working principle of this embodiment is the same as that of the first embodiment, except that during the working stroke, the tension spring 72B is stretched, so that the tension spring 72B is in an energy storage state, and the elastic force of the tension spring 72B is to force the lock pin 5 Translate toward the direction of insertion into the fixed locking hole 22 and the movable locking hole 32 .

[Example 4]

What Fig. 16 shows is the fourth embodiment of the present invention, its structure is similar to the first embodiment, the difference is that the elastic locking device 7 omits the sleeve 71 and the adjusting rod 73, and only retains the compression spring 72A; The spring seat 52 of the lock pin 5 is extended to be inserted into the vertical plate 11 of the chassis 1, the compression spring 72A is set on the spring seat 52, and one end of the compression spring 72A abuts against the spring stopper 57 on the lock pin 5 The other end abuts against the vertical plate 11 of the chassis 1 . The working principle of this embodiment is the same as that of the first embodiment, except that the working elastic force of the compression spring 72A cannot be adjusted.

[Example 5]

What Fig. 17 to Fig. 18 shows is the fifth embodiment of the present invention. The difference between the structure of the hinge in this embodiment and any of the above-mentioned embodiments is that the movable hinge plate 3 is set on the outside of the fixed hinge plate 2, and the other components adopt the same structure.

[Example 6]

19 to 20 show the sixth embodiment of the present invention. The structure of this embodiment is similar to that of the fourth embodiment, and the locking device in the fourth embodiment is adopted, and the sliding hammer 54 , the hammering plate 55 and the clamping plate 13 are added.

However, the linkage structure and working principle of the pedal 6 and the base 51 of the lock pin are different from those of the above-mentioned embodiments. The sliding pin 61 in the chute 63 adopts the following structure: the middle part of the pedal 6 is pivotally connected to the support seat 12 provided at the end of the chassis 1 through the pivot pin 62, and the support seat 12 can be arranged on the chassis. 1 also can directly adopt the appropriate structure of the underframe 1; the bottom end of the pedal 6 is a bent part to step on; Conflictingly connected with the column 58.

The pedal 6 rotates around the pivot pin 62, and at the same time, the top of the pedal 6 pushes the column 58 to push the lock pin to move in translation, realizing the linkage between the pedal 6 and the lock pin.

It can be known from common technical knowledge that the present invention can be realized through other embodiments without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are embraced by the present invention.

Claims (21)

1. the hinge of a folding carton comprises:

The fixed hinge plate, this fixed hinge plate is provided with stationary pivot hole and fixedly locked hole;

The moveable hinge carrier bar, coupling is provided with movable pivoting hole and movable lock hole accordingly on this moveable hinge carrier bar;

Ship and resell on another market, being inserted in this stationary pivot hole and this activity pivoting hole pivots this fixed hinge plate is connected with this moveable hinge carrier bar;

Lock pin can insert and break away from this fixedly locked hole and this activity lock hole;

It is characterized in that, described hinge further comprises elastic locking device, this elastic locking device is connected between the underframe and this lock pin of folding carton, and the elastic force of this elastic locking device is to force the direction translation of this lock pin in inserting this fixedly locked hole and this activity lock hole.

2. the hinge of folding carton according to claim 1 is characterized in that, described elastic locking device comprises spring, and this spring is connected between the underframe of described lock pin and described folding carton.

3. the hinge of folding carton according to claim 2 is characterized in that, described spring is the compression spring, and described elastic locking device further comprises:

Sleeve is fixed on the underframe of described folding carton, and an end of this sleeve is sleeved on the described lock pin; And

Adjusting rod is plugged in the other end of this sleeve, and this adjusting rod comprises oppression department and the adjusting portion that connects into " T " font, and this adjusting portion is bolted in the end face of this sleeve, and this oppression department is arranged in this sleeve;

One end of this compression spring is connected to the oppression department of this adjusting rod, and the other end is connected to the end face of this lock pin.

4. the hinge of folding carton according to claim 2, it is characterized in that, described spring is an extension spring, one end hanging sleeve of this extension spring is on the hanging column of being located on the described lock pin and other end hanging sleeve is being fixedly connected on the hanging column on the underframe of described folding carton, and this is located at hanging column on the lock pin, and this hanging column of being located on the underframe of folding carton is nearer from this fixed hinge plate from described fixed hinge plate is far away.

5. according to the hinge of each described folding carton in the claim 1 to 4, it is characterized in that described hinge further comprises pedal, this pedal is connected interlock with described lock pin.

6. the hinge of folding carton according to claim 5, it is characterized in that, the top of described pedal is provided with chute, sliding pin is inserted in the chute of this pedal and is fixed on the described lock pin this pedal is connected in this lock pin, and the position that is positioned at the below of this chute on this pedal is articulated in the underframe of described folding carton by pivotal pin.

7. the hinge of folding carton according to claim 5, it is characterized in that, the middle part of described pedal is articulated in the underframe of described folding carton by pivotal pin, and the coupling ground, top over against this pedal on the described lock pin is installed with column, and the top of this pedal is connected with this column conflict.

8. the hinge of folding carton according to claim 5 is characterized in that, coupling is provided with postive stop baffle corresponding to described pedal on the underframe of described folding carton.

9. according to the hinge of each described folding carton in the claim 1 to 4, it is characterized in that described lock pin comprises:

Base portion, for the cross section is the elongated rod shape member of rectangle, the middle part of this base portion is provided with described pedal carries out the installing hole that pin is connected;

Lock part, this lock part stretches out from an end of the close described fixed hinge plate of this base portion; And

Spring base is arranged at the other end of this base portion.

According to claim the hinge of 9 folding cartons of stating, it is characterized in that the lock part of described lock pin is one along the diminishing cone of bearing of trend, an inclined-plane is arranged in the outer end of this pintle hook lock portion, this inclined-plane up, the outermost end on this inclined-plane is the transition part of a slyness.

11. the hinge of folding carton according to claim 10 is characterized in that, is equiped with friction plate on the described inclined-plane.

12. the hinge of folding carton according to claim 9 is characterized in that, is set with sliding hammer on the base portion of described lock pin and is provided with the hammering plate, coupling is provided with the clamp of pivot on the described underframe corresponding to this hammering plate.

13. the hinge of folding carton according to claim 10 is characterized in that, the lock part that described fixedly locked hole and described movable lock hole all are matched with described lock pin is made as the little bellmouth of the big end of an end.

14. the hinge of folding carton according to claim 13 is characterized in that, the below of the stub end of the movable lock hole of described moveable hinge carrier bar is provided with briquetting, and this briquetting is a semicylinder, and the periphery of this briquetting is over against described lock pin.

15. the hinge of folding carton according to claim 13, it is characterized in that, the below of the stub end of the movable lock hole of described moveable hinge carrier bar is provided with briquetting, this briquetting is the block with an inclined-plane, and the inclined-plane of this briquetting is complementary corresponding with the inclined-plane of the lock part of described lock pin and has identical gradient.

16. a folding carton comprises underframe, corner post, is articulated in hinge between this corner post and this underframe, is installed in the corner fittings on underframe and the corner post; Described hinge comprises:

The fixed hinge plate, this fixed hinge plate is provided with stationary pivot hole and fixedly locked hole;

The moveable hinge carrier bar, coupling is provided with movable pivoting hole and movable lock hole accordingly on this moveable hinge carrier bar;

Ship and resell on another market, being inserted in this stationary pivot hole and this activity pivoting hole pivots this fixed hinge plate is connected with this moveable hinge carrier bar;

Lock pin can insert and break away from this fixedly locked hole and this activity lock hole;

It is characterized in that, described hinge further comprises elastic locking device, this elastic locking device is connected between the underframe and this lock pin of folding carton, and the elastic force of this elastic locking device is to force the direction translation of this lock pin in inserting this fixedly locked hole and this activity lock hole.

17. folding carton according to claim 16 is characterized in that, described elasticity shrinking device is the compression spring, and described elastic locking device further comprises:

Sleeve is fixed on the underframe of described folding carton, and an end of this sleeve is sleeved on the described lock pin; And

Adjusting rod is plugged in the other end of this sleeve, and this adjusting rod comprises oppression department and the adjusting portion that connects into " T " font, and this adjusting portion is bolted in the end face of this sleeve, and this oppression department is arranged in this sleeve;

One end of this compression spring is connected to the oppression department of this adjusting rod, and the other end is connected to the end face of this lock pin.

18. folding carton according to claim 16, it is characterized in that, described elastic locking device is an extension spring, one end hanging sleeve of this extension spring is on the hanging column of being located on the described lock pin and other end hanging sleeve is being fixedly connected on the hanging column on the underframe of described folding carton, and this is located at hanging column on the lock pin, and this hanging column of being located on the underframe of folding carton is nearer from this fixed hinge plate from described fixed hinge plate is far away.

19. according to each described folding carton in the claim 16 to 18, it is characterized in that described hinge further comprises pedal, this pedal is connected interlock with described lock pin.

20. folding carton according to claim 19, it is characterized in that, the top of described pedal is provided with chute, sliding pin is inserted in the chute of this pedal and is fixed on the described lock pin this pedal is connected in this lock pin, and the position that is positioned at the below of this chute on this pedal is articulated in the underframe of described folding carton by pivotal pin.

21. folding carton according to claim 19, it is characterized in that, the middle part of described pedal is articulated in the underframe of described folding carton by pivotal pin, and the coupling ground, top over against this pedal on the described lock pin is installed with column, and the top of this pedal is connected with this column conflict.

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