TWI547386B - A band with a locking function, and a film transducer with the core band - Google Patents

Description

Core set with locking function and film transferr with the same

The invention relates to a core band set, in particular to a core band set with a locking function.

The existing film transfer device, such as a correction tape or an adhesive tape, is generally provided with a core tape set in a casing. The existing core tape set mainly includes a body, and a transliteration head is disposed at one end of the body, and another set is provided. The utility model has a core pulley group and a core belt which is arranged around the core pulley group and the transfer head. The core pulley group mainly comprises a core pulley and a recovery wheel which are interlocked with each other; and the environmental protection concept is adopted, and the consumer is reduced. The burden of the existing film transfer device is mostly in a detachable form, so that the user can replace the set of the core tape for the user. Therefore, the original film transfer unit has a separate package and is sold separately. A spare belt is formed to facilitate the user to purchase and replace the old core belt set.

In order to avoid the loosening of the core belt from the core pulley group during the production, packaging or transportation process of the core belt of the existing core belt group, the existing core belt group will be separately set. A fixing card 60 as shown in FIGS. 12 and 13, the fixing card 60 is mainly made of paper, and comprises a bottom plate 62. The bottom plate 62 is convexly formed with a core band that can be caught in the core pulley set 50. The tabs 64 of the axle of the wheel 52 are rotated to limit the core pulley 52 of the core pulley to prevent loosening of the core.

However, the existing fixing card 60 can only provide the locking positioning effect when the core tape set 50 is packaged and transported. When the user wants to assemble the core tape set 50 into the casing of the film transfer device, it must be fixed first. The card 60 is removed from the core belt set 50, but this loses the lock for the core pulley set, so it is easy When the user assembles the core band 50, the rotation of the core pulley 52 causes the core tape to loosen, so that the assembly is inconvenient, and the correction tape or the adhesive tape on the core tape is more likely to be loosened due to the release of the core tape. Adhesives such as glue adhere to other objects or users' hands, which not only cause environmental or user mess, but also cause the core tape to be unusable, adding unnecessary waste.

Therefore, the present inventors have finally developed an inventor who can improve the existing defects in view of the existing structure and the use of the existing core band, and through continuous research and experimentation.

The main object of the present invention is to provide a core band set with a locking function and a film transfer device having the same, which can prevent the core tape from being loosened during the packaging, transportation and assembly of the core tape set. And it can facilitate the replacement and assembly of the core belt group, so as to achieve the purpose of improving the convenience and practicability of the core belt group.

In order to achieve the above object, the present invention mainly provides a core tape set, comprising: a body; a core wheel set disposed on the body, the core wheel set includes a core pulley and a recovery wheel, The core pulley and the recovery wheel are respectively rotatably disposed on the body, and the core pulley and the recovery wheel each include a side surface; a core belt wound around the core pulley group; and an elastically disposed on the core pulley a locking device that is directly engaged with the core pulley of the core pulley and one of the recovery wheels to restrict rotation of the core pulley, the locking device comprising at least one buckle formed on the body and buckled An elastic clamping arm of the core pulley set, and at least one elastic clamping arm of each a small end is connected to the body, and the side of the core pulley and the recovery wheel face the locking device, wherein one side surface is axially formed with a circumferential surface, and a plurality of concave and convex portions are formed on the circumferential surface of the ring, and each of the at least An elastically clamped arm is radially snapped onto one of the reliefs.

The present invention further provides a film transfer device comprising: a housing in which a transmission device is disposed; a core band set in the housing, the core band assembly comprising: a body; a core pulley set disposed on the body and connected to the transmission device, the core pulley set includes a core pulley and a recovery wheel, and the core pulley and the recovery wheel are respectively rotatably disposed on the body And the core pulley and the recovery wheel each include a side surface; a core belt wound around the core pulley group; and a core pulley elastically disposed on the body and the core pulley group and the recycling a locking device for directly locking the wheel to limit the rotation of the core pulley set, the locking device comprising at least one elastic clamping arm formed on the body and snapped to the core pulley set, and each of the at least one At least one end of the elastic clamping arm is connected to the body, the side of the core pulley and the recovery wheel face the locking device, wherein one side surface is axially formed with a circumferential surface, and a plurality of concave and convex portions are formed on the circumferential surface of the ring And each of the at least one elastic card arm system One of the concave and convex portions is buckled to the ground; a transfer head coupled to the core pulley and extending out of the housing; and an unlocking structure disposed on the housing and corresponding to the locking device for releasing the The locking effect of the locking device on the core pulley set.

By the above technical means, the present invention can be limited by a locking device The core pulley group rotates arbitrarily, so that in the process of packaging, transporting and assembling the core pulley group, the phenomenon that the core belt is loosened due to the rotation of the core pulley group can be avoided, so that the core belt group can be simplified. The packaging and transportation operation process reduces the overall cost, and the user can replace the core belt group by himself, which can improve the convenience of assembly of the core belt group, and can avoid unnecessary waste of the core belt, thereby improving the overall core group. Practicality.

The invention provides a core tape set and a film transfer device having the core tape set. The film transfer device of the present invention can be a correction tape or an adhesive tape, etc., wherein the coating material on the film can be transferred to a The device of the predetermined position is included in the scope of the present invention. Referring to FIG. 1, it can be seen that the film transfer device of the present invention comprises a casing 10 and a core set 20, wherein the casing The body 10 has an accommodating space for accommodating the core group 20 therein, and the housing 10 is provided with a transmission device 13, as shown in FIG. 10, and the housing 10 can be covered by at least two combined housings. The cover may be in the form of a combination of left and right as shown in the figure, and may also be a combination of front and rear or upper and lower covers. As long as the casing 10 is separable, the present invention does not limit the form, number and combination of the cover. The core tape set 20 can also be in the form of being completely retracted into the casing 10 in a normal state, as shown in FIG. 1. At this time, another set of the core tape set 20 is extended on the casing 10. The telescopic device 12 of the body 10, the telescopic device 12 can be a push button type as shown in FIG. 1 or a knob type or push In the form of the telescopic device 12, as long as the telescopic device 12 can reach the function of extending the core band 20 out of the casing 10, the present invention does not limit the form of the telescopic device 12, wherein the casing 10, the transmission device 13 and the telescopic device 12 are not the present invention. The focus, so the detailed structure is not repeated.

Referring first to Figures 1 to 4, the core set 20 of the present invention is expandable and contractible. Is disposed in the housing 10, and can be connected to the telescopic device 12 of the housing 10, so that the core band 20 can be pushed and extended relative to the housing 10 or retracted into the housing 10, which mainly includes a body 21, A transfer head 22, a core pulley set 23, a core strip 26 and a locking device 28, wherein the body 21 is in a detachable configuration and combined with the telescopic device 12, the transfer head 22 The utility model is disposed at one end of the body 21, and can be pushed out to extend out of the housing 10. The core pulley group 23 is disposed at the other end of the body 21, and includes a core pulley 24 and a recovery wheel 25, the core pulley 24 And the recovery wheel 25 is rotatably disposed on the body 21, respectively, and can be synchronized with the transmission 13 on the housing 10, as shown in FIG. 10, so that the core pulley 24 and the recovery wheel 25 can be synchronized. Rotation, wherein the core pulley 24 has a side surface facing the locking device 28, and a circumferential surface is axially formed on the side surface, and a plurality of concave and convex portions 242 are formed on the circumferential surface.

The core tape 26 is wound around the core pulley set 23 and the transfer head 22, and the unused end is wound around the core pulley 24, and the used end is wound around the transfer head 22. It is provided on the recovery wheel 25.

The locking device 28 is elastically disposed on the body 21 for restricting the rotation of the core pulley set, and is buckled to the core pulley set 23, preferably, is fastened to the core pulley 24, and more preferably And radially snapped onto one of the concave and convex portions 242 of the core pulley 24, thereby preventing the core belt pulley 23 from being arbitrarily rotated to cause the core belt 26 to be detached and loosened from the core pulley group 23. Moreover, the locking device 28 mainly comprises at least one elastic clamping arm 29 formed on the body 21. Preferably, two elastic clamping arms 29 are provided, and each elastic clamping arm 29 comprises a straight section 292. And an arc segment 294 which is integrally elastically connected to the body 21 and has a free end at the other end. One end of the curved section 294 is connected to the free end of the straight section 292, and the other end is formed with a locking end. On the clamping end, a clamping piece which can be hooked on one of the concave and convex parts 242 of the core pulley 24 is formed. 296, wherein the engaging member 296 is a convex portion and is engaged with the concave portion of the concave and convex portion 242, and the other engaging member 296 can also be a concave portion and is engaged with the convex portion of the concave and convex portion 242, and is also in the curved portion. A pushing protrusion 298 protruding away from the core pulley group 23 is protruded from the locking end of the 294. By the snapping of the engaging member 296 and the concave and convex portion 242, the core pulley 24 can be prevented from being arbitrarily rotated.

In addition, each of the elastic clamping arms 29 may also include a straight line segment integrally coupled to the body 21, and the other end of the straight line portion forms a carding end, and the card end has a formed end. The engaging member 296 of the concave and convex portion 242 is fastened to the engaging portion of the concave portion 242, and a pushing convex portion 298 is protruded from the engaging end.

Each of the elastic clamping arms 29 can also include only an arcuate segment integrally elastically coupled to the body 21, and the other end of the arcuate segment forms a carding end on the carding end. A locking member 296 is formed on one of the concave and convex portions 242 of the core pulley 24, and a pushing convex portion 298 is protruded from the locking end.

The two ends of the elastic clamping arm 29 can be respectively fixedly connected to the body 21, and a locking portion is formed between the two ends of the elastic clamping arm 29, and a forming portion is formed on the locking portion. The engaging member 296 of the concave and convex portion 242 is fastened to the clamping portion 242 of the core pulley 24, and a pushing convex portion 298 is protruded from the engaging portion.

Thus, for the manufacturer, when the core tape set 20 is packaged and transported, the fixing structure such as the existing fixing card can be omitted, and the core tape can be simplified. The operation process of group 20 packaging and transportation reduces the cost thereof, and at the same time, for the user, when the user purchases the core tape group 20 and wants to replace the old core tape group, the locking device 28 can lock the core. The pulley set 23 is kept in a locked state during the entire assembly process, so that the core belt 26 does not loosen, the assembly of the core belt set 20 can be improved, and the core belt 26 can be prevented from being loosened. Unnecessary waste to improve the practicality of the core group as a whole.

Further, the housing 10 of the film transfer device is provided with an unlocking structure 15 corresponding to the locking device 28 on the core set 20, please refer to FIGS. 1, 4 and 5, and the unlocking structure 15 is disposed inside the housing 10. At least one elastic locking arm 29 of the mating locking device 28 is formed with at least one guiding block 16 on the wall surface, and each guiding block 16 can be spaced apart from the elastic locking arm 29 after the housing 10 is closed. When the telescopic device 12 is operated to extend the transfer head 22 of the core set 20 out of the housing 10, the pushing protrusion 298 on the elastic locking arm 29 can be pushed against the guide block 16 on the housing 10. The locking member 296 of the elastic clamping arm 29 is separated from the concave and convex portion 242 of the core pulley 24, so that the core pulley 24 can be restored to the rotatable state, and the locking of the core pulley 24 is released. The core set 20 can be operated normally to provide the function of film transfer, and when the transfer head 22 of the core set 20 is retracted into the casing 10 through the telescopic device 12, the elastic clamping arm 29 can be pushed. The convex portion 298 is disengaged from the position of the guide block 16, whereby the elasticity of the elastic clamping arm 29 itself can be used to re-clamp the clamping member 296 to the core pulley 2 On one of the concavo-convex portions 242 of the fourth portion, the core pulley group 23 is returned to the locked state.

In addition, please refer to FIG. 6 to FIG. 9 to see another embodiment of the present invention, wherein the housing 10A can be composed of three shell covers combined with each other, and a guide block is disposed on the housing 10A. 16A unlock structure 15A, and its core The belt set 20A may be in the form of a normal protruding housing 10A. At this time, the housing 10A may further include a cover body 14 which protrudes from the core set 20A and protrudes from the housing 10A to avoid the core strip. The group 20A contacts other objects when not in use, and this embodiment can directly push the guide block 16A of the unlocking structure 15A of the housing 10A against the pushing convex portion 298A of the elastic locking arm 29A when the housing 10A is closed. The locking member 296A of the elastic locking arm 29A is separated from the concave and convex portion 242A of the core pulley 24A to release the locked state of the core pulley group 23A, so that the core belt set 20A can be normally operated to provide The function of film transfer.

The locking device of the present invention can also be snapped to the recovery wheel 25 of the core pulley set 23, 23A, wherein the locking device can also include at least one elastic clamping arm that can be snapped onto the recovery wheel 25, the elastic card The arm structure can be as shown in FIG. 1 or 6, but the direction is opposite to that of FIG. 1 or 6, so that the elastic clamping arm can be snapped onto the recovery wheel 25.

Referring again to FIGS. 10 and 11, another embodiment of the film transfer device of the present invention comprises a housing 10B and a core set 20B, wherein the structure of the housing 10B and the core set 20B is substantially The same or similar to the foregoing embodiment, only the difference between the present embodiment and the foregoing embodiment will be described below.

The transfer head 22B is disposed on the housing 10B and connected to the core set 20B. When the core set 20B is disposed in the housing 10B, one end of the body 21B of the core set 20B and the transfer head 22B is combined, and the core strip 26B wound around the core pulley group 23B is sleeved on the housing 10B after the core belt group 20B is assembled on the housing 10B, and is turned over on the transfer head 22B provided on the housing 10B. The write head 22B stretches the core strip 26B to facilitate the use of the core strip 26B.

The locking device 28B is elastically disposed on the body 21B for limiting The rotation of the core pulley set 23B is the same as that of the previous embodiment, and will not be further described herein.

It is apparent that the various modifications and changes can be made without departing from the spirit and novel concept of the invention, and the specific embodiments disclosed herein are not intended to limit the invention. All modifications in the scope of the appended patent application.

10,10A,10B‧‧‧shell

12‧‧‧Flexing device

13‧‧‧Transmission

14‧‧‧ Cover

15,15A‧‧‧Unlocking structure

16,16A‧‧‧ lead block

20, 20A, 20B‧‧ ‧ core group

21, 21B‧‧‧ ontology

22,22B‧‧‧Transfer head

23,23A, 23B‧‧‧ Core Belt Set

24,24A‧‧ ‧Pull pulley

242,242A‧‧‧

25‧‧‧Recycling wheel

26,26B‧‧

28,28A,28B‧‧‧Locking device

29,29A‧‧‧Flexible arm

292‧‧‧ Straight line

294‧‧‧Arc segments

296,296A‧‧‧Card parts

298,298A‧‧‧ pushed to the convex

50‧‧‧ Core Belt

52‧‧‧The belt pulley

60‧‧‧fixed card

62‧‧‧floor

64‧‧‧Cars

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective exploded view of a first embodiment of a film transfer device of the present invention.

Figure 2 is a perspective view of the first embodiment of the core tape set of the present invention.

Figure 3 is a perspective exploded view of the first embodiment of the core tape set of the present invention.

Figure 4 is a partial enlarged view of the first embodiment of the film transfer device of the present invention.

Figure 5 is a partially enlarged view showing the operation of the first embodiment of the film transfer device of the present invention.

Figure 6 is a perspective view of a second embodiment of the film transfer device of the present invention.

Figure 7 is a perspective view showing a second embodiment of the core tape set of the present invention.

Figure 8 is a partial enlarged view of a second embodiment of the film transfer device of the present invention.

Figure 9 is a partially enlarged view showing the operation of the second embodiment of the film transfer device of the present invention.

Figure 10 is a perspective exploded view of a third embodiment of the film transfer device of the present invention.

Figure 11 is a perspective view showing a third embodiment of the core tape set of the present invention.

Figure 12 is an exploded perspective view of the existing core band set and the fixed card.

Figure 13 is a partial cross-sectional view showing a combination of a conventional core tape set and a fixed card.

10‧‧‧shell

12‧‧‧Flexing device

16‧‧‧ Guide block

20‧‧‧ Core Group

21‧‧‧ body

22‧‧‧Transfer head

23‧‧‧The core wheel set

26‧‧‧

28‧‧‧Locking device

29‧‧‧Flexible arm

298‧‧‧Pushing the convex part

Claims (29)

A core belt set comprising: a body; a core pulley set disposed on the body, the core pulley set comprises a core pulley and a recovery wheel, the core pulley and the recovery wheel respectively respectively Rotatingly disposed on the body, the core pulley and the recovery wheel each include a side surface; a core belt wound around the core pulley group; and an elastically disposed on the body and coupled to the core pulley a locking device of the set of pulleys and the recovery wheel that is directly snapped to limit rotation of the core pulley set, the locking device comprising at least one molded on the body and snapped to the core pulley set Elastically clamping the arm, and at least one end of each of the at least one elastic clamping arm is connected to the body, the side of the core pulley and the recovery wheel facing the locking device, wherein a circumferential surface is axially formed on one side A plurality of concave and convex portions are formed on the circumferential surface of the ring, and each of the at least one elastic clamping arms is radially locked to one of the concave and convex portions. The core tape set according to claim 1, wherein the circumferential surface is formed on a side of the core pulley, and the locking device is fastened to the core pulley. The core tape set according to claim 2, wherein the core tape set further comprises a transfer head disposed at one end of the body. The core band set of claim 3, wherein each of the elastic card armings comprises a straight line segment and an arc segment, the straight line segment being integrally elastically coupled to the body, the other end of the straight line segment The free end of the curved section is connected to the free end of the straight section, and the other end of the curved section is formed with a carding end, and a snap-fit end is formed on the carding end. The engaging member of one of the concave and convex portions of the wheel is further provided with a pushing convex portion on the locking end of the curved portion. The core band set according to claim 3, wherein each of the elastic clamping arm members comprises a straight line segment, the straight line segment is integrally elastically coupled to the body, and the other end of the straight line segment forms a card. The engaging end is formed with a clamping member that can be hooked on one of the concave and convex portions of the core pulley, and a pushing convex portion is protruded from the locking end. The core band set according to claim 3, wherein each of the elastic clamping arms comprises an arc segment, the arc segment being integrally elastically coupled to the body, the other end of the arc segment being formed A card-shaped end is formed with a clamping member that can be hooked on one of the concave and convex portions of the core pulley, and a pushing convex portion is protruded from the clamping end. The core tape set according to claim 3, wherein the two ends of the elastic clamping arm are respectively fixedly connected to the body, and a locking portion is formed between the two ends of the elastic clamping arm. A locking member that can be hooked on one of the concave and convex portions of the core pulley is formed on the locking portion, and a pushing convex portion is protruded from the locking portion. The core tape set according to claim 1, wherein the circumferential surface is formed on a side of the recovery wheel, and at least one elastic clamping arm is fastened to the recovery wheel. The core band set of claim 8, wherein each of the elastic card armings comprises a straight line segment and an arc segment, the straight line segment being integrally elastically coupled to the body, the other end of the straight line segment The free end of the curved section is connected to the free end of the straight section, and the other end of the curved section is formed with a carding end that can be snapped onto the recovery wheel, and the arcuate section is The A pushing protrusion is protruded from the clamping end. The core band set of claim 8, wherein each of the elastic card armings comprises a straight line segment, the straight line segment is integrally elastically coupled to the body, and the other end of the straight line segment forms a shackle The carding end of the recycling wheel is buckled, and a pushing protrusion is protruded from the carding end. The core band set of claim 8, wherein each of the elastic clamping arms comprises an arc segment, the arc segment being integrally elastically coupled to the body, the other end of the arc segment being formed A buckle end on the recovery wheel is buckled, and a pushing protrusion is protruded from the carding end. The core tape set of claim 8, wherein the two ends of the elastic clamping arm are respectively fixedly connected to the body, and a buckle is formed between the two ends of the elastic clamping arm. a locking portion on the recycling wheel, and a pushing convex portion is protruded from the locking portion. A film transfer device includes: a housing in which a transmission device is disposed; a core belt group housed in the housing, the core belt assembly includes: a body; a core pulley group connected to the transmission body, the core pulley group includes a core pulley and a recovery wheel, and the core pulley and the recovery wheel are respectively rotatably disposed on the body, and the core The pulley and the recovery wheel each include a side surface; a core belt wound around the core pulley group; and the core pulley and the recovery wheel elastically disposed on the body and the core pulley group a locking device for directly locking the rotation of the core pulley, the locking device comprising at least one molded on the body And snapping to the elastic clamping arm of the core pulley set, and at least one end of each of the at least one elastic clamping arm is connected to the body, the side of the core pulley and the recovery wheel facing the locking device, one of the A circumferential surface is formed axially on the side surface, and a plurality of concave and convex portions are formed on the circumferential surface of the ring, and each of the at least one elastic clamping arm is radially buckled to one of the concave and convex portions; And a transfer head extending from the housing; and an unlocking structure disposed on the housing and corresponding to the locking device for releasing the locking of the locking wheel set by the locking device. The film transfer device of claim 13, wherein the circumferential surface is formed on a side of the core pulley, and the locking device is snapped onto the core pulley. The film transfer device of claim 14, wherein the transfer head is disposed at one end of the body of the core set. The film transfer device of claim 15, wherein each of the elastic clamping arms comprises a straight segment and an arc segment, the straight segment being integrally elastically coupled to the body, the straight segment being another The end of the curved section is connected to the free end of the straight section, and the other end of the curved section is formed with a carding end, and a locking end is formed on the clamping end to form a buckle The engaging member of one of the concave and convex portions of the pulley is further provided with a pushing convex portion on the locking end of the curved portion. The film transfer device of claim 15, wherein each of the elastic clamping arms comprises a straight section, the straight section is integrally elastically coupled to the body, and the other end of the straight section forms a card The clamping end is formed with a clamping member that can be hooked on one of the concave and convex portions of the core pulley, and a pushing convex portion is protruded from the clamping end. The film transfer device of claim 15, wherein each of the elastic clamping arms comprises an arc segment that is integrally elastically coupled to the body, the other end of the curved segment Forming a carding end, the carding end is formed with a clamping member that can be snapped onto one of the concave and convex portions of the core pulley, and a pushing convex portion is protruded from the clamping end. The film transfer device of claim 15, wherein the two ends of the elastic clamping arm are respectively fixedly connected to the body, and a card is formed between the two ends of the elastic clamping arm. The engaging portion is formed with a engaging member that can be hooked on one of the concave and convex portions of the core pulley, and a pushing convex portion is protruded from the engaging portion. The film transfer device of any one of claims 16 to 19, wherein the unlocking structure is disposed on an inner wall surface of the housing, and includes at least one of the at least one elastic card that cooperates with the locking device The guide block of the arm, the at least one guide block is spaced apart from the at least one elastic clamping arm after the housing is closed. The film transfer device of any one of claims 16 to 19, wherein the unlocking structure is disposed on an inner wall surface of the housing, and includes at least one of the at least one elastic card that cooperates with the locking device The guiding block of the arm, the at least one guiding block is respectively pushed against the pushing convex portion of the at least one elastic clamping arm after the housing is closed. The film transfer device of claim 13, wherein the circumferential surface is formed on a side of the recovery wheel, and the at least one elastic clamping arm is snapped to the recovery wheel. The film transfer device of claim 22, wherein each of the elastic clamping arms comprises a straight line segment and an arc segment, the straight line segment The other end of the straight section is a free end, the end of the curved section is connected to the free end of the straight section, and the other end of the curved section is formed with a buckle The carding end of the recycling wheel has a pushing convex portion protruding from the locking end of the arc segment. The film transfer device of claim 22, wherein each of the elastic clamping arms comprises a straight segment, the straight segment is integrally elastically coupled to the body, and the other end of the straight segment forms a The card is terminated on the carding end of the recycling wheel, and a pushing protrusion is protruded from the carding end. The film transfer device of claim 22, wherein each of the elastic clamping arms comprises an arc segment that is integrally elastically coupled to the body, the other end of the curved segment Forming a carding end that can be snapped onto the recycling wheel, and a pushing protrusion is protruded from the carding end. The film transfer device of claim 22, wherein the two ends of each of the elastic clamping arms are respectively fixedly connected to the body, and a card is formed between the two ends of the elastic clamping arm. A locking portion is fastened on the collecting wheel, and a pushing convex portion is protruded from the engaging portion. The film transfer device of any one of claims 22 to 26, wherein the unlocking structure is disposed on an inner wall surface of the housing, and includes at least one elastic card that cooperates with the locking device The guide block of the arm, the at least one guide block is spaced apart from the at least one elastic clamping arm after the housing is closed. The film transfer device of any one of claims 23 to 26, wherein the unlocking structure is disposed on an inner wall surface of the housing, and includes at least one of the at least one elastic card that cooperates with the locking device a guide block of the arm, the at least one guide block is respectively pushed against the at least one of the guide blocks The push-up projection of an elastic clamping arm. The film transfer device of claim 15, wherein the unlocking structure is disposed on an inner wall surface of the housing, and includes at least one guide block of the at least one elastic clamping arm that cooperates with the locking device, The at least one guiding block is respectively pushed against the at least one elastic clamping arm after the housing is closed.