TWI721853B - Screwless fixing device - Google Patents

Abstract

A screwless fixing device having an outer cylinder, a movable structure, a roller and a latching structure. The outer cylinder has a pushing portion. The movable structure is inserted in the outer cylinder and protrudes from the outer cylinder to form a protruding segment, and the movable structure further has a through hole and a latching hole. The roller is accommodated in the through holes and a protruding portion thereof is protruded from the through hole. The pushing portion is located in a path of a following movement of the protruding portion. The latching structure has a latching slot. When the latching structure is inserted into the latching hole, the protruding segment is pushed and the movable structure is thereby moved backward with the roller relative to the outer cylinder, and the protruding portion of the roller meanwhile moves along the path until pushed it into the latching slot by the pushing portion. Thereby, the latching is latched and fixed without screw.

Description

Screwless fixing device

The present invention relates to a fixing device, in particular to a screwless fixing device.

When an object A is to be fixed to an object B, the existing method is to fix it with screws.

However, when fixing with screws, even if it is carried out with an electric hand tool (electric screwdriver), the electric hand tool still has to drive the screw to rotate many times before it can be fixed. Obviously, it is slow and troublesome. The possibility of skew has been criticized for a long time.

The object of the present invention is to provide a screwless fixing device.

In order to achieve the above object, the present invention provides a screwless fixing device, including: an outer cylinder with a pushing part; a movable structure that can movably penetrate the outer cylinder and protrude from the outer cylinder to form a protruding section , The movable structure has a perforation and an insertion hole that communicate with each other; a ball is accommodated in the perforation and protrudes from the perforation to form a protruding portion, and the pushing portion is located at the protruding portion and follows the ball through the ball. On a moving path formed by the movement of the movable structure; and a plug-in structure having a slot for the ball buckle; wherein the plug-in structure and the plug hole are plugged into each other, and the movable structure passes through the protrusion segment Pushed by the plug-in structure and moved together with the ball relative to the outer cylinder, the ball moves along the movement path via the protruding portion until it is pushed by the pushing portion to be buckled in the slot.

The present invention also provides another screwless fixing device for an object to be fixed and includes: an outer cylinder with a pushing portion; a movable structure that can movably penetrate the outer cylinder and protrude from the outer cylinder A protruding section, the movable structure has a perforation and an insertion hole communicating with each other; a ball is accommodated in the perforation and protruding from the perforation to form a protruding portion, the pushing portion is located at the protruding portion through The ball follows the movable structure on a moving path formed by the movement; and an insertion structure having a slot for the ball to buckle, and the object to be fixed is fixed to the insertion structure; wherein, the insertion structure The movable structure is pushed by the object to be fixed via the protruding section to move relative to the outer cylinder together with the ball, and the ball moves along the movement path through the protruding portion to be The pushing part is pushed and buckled in the card slot.

Compared with the prior art, the present invention has the following effects: it can achieve a screwless fixing effect.

100: fixed device

1: fixed frame

2: Outer cylinder

21: Inner peripheral wall

211: Push to the Ministry

212: Depressed part

22: inner top wall

23: necking hole

24: Guide groove

241: Longitudinal Section

242: Cross Section

3: Activity structure

31: Activity subject

311: Socket

312: Piercing

313: Jack

314: end face

315: protruding section

32: connecting rod

33: latch

331: Convex

4: Ball

41: Protruding part

5: Elastic element

6: Plug-in structure

61: Block

62: plug post

621: card slot

900: Object to be fixed

T: Rotating positioning structure

Fig. 1 is a three-dimensional exploded view of the fixing device of the present invention (without the plug-in structure).

Fig. 2 is a perspective view of the fixing device of the present invention before being inserted.

FIG. 3 is a cross-sectional view of the present invention according to FIG. 2.

Fig. 4 is a perspective view of the fixing device of the present invention after being inserted.

FIG. 5 is a cross-sectional view of the present invention according to FIG. 4.

Fig. 6 is a perspective view of the fixing device of the present invention after being rotated.

FIG. 7 is a cross-sectional view of the present invention according to FIG. 6.

FIG. 8 is a cross-sectional view of the present invention according to FIG. 6 from another perspective.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and description, and are not intended to limit the present invention.

The present invention provides a screwless fixing device (hereinafter referred to as fixing device) for fixing an object 900 to be fixed (as shown in FIG. 2). The present invention is not limited to the object 900 to be fixed. For example, the object to be fixed 900 It can be a circuit board as shown in FIG. 2, and a plurality of fixing devices 100 of the present invention can be provided around the circuit board.

As shown in FIGS. 1 to 3, the fixing device 100 of the present invention includes: an outer cylinder 2, a movable structure 3, a ball 4, and a plug-in structure 6 shown in FIG. 1; preferably, it also includes: A fixing frame 1, an elastic element 5 shown in FIG. 1 and a rotating positioning structure T shown in FIG. 2 are shown.

The outer cylinder 2 is a hollow cylinder, one end of which protrudes with a neck (not marked with component symbols), and the other end is an opening (not marked with component symbols). The neck is fixed to the fixing frame 1 and defines a necking hole 23, and the necking hole 23 communicates with the inside of the outer cylinder 2.

The outer cylinder 2 has an inner wall inside, and the inner wall includes an inner peripheral wall 21 (see FIG. 1) and an inner top wall 22 (see FIG. 3). The inner peripheral wall 21 includes a pushing portion 211 and a concave portion 212 recessed relative to the pushing portion 211. In this embodiment, the inner peripheral wall 21 of the outer cylinder 2 can be made to be all the pushing portions 211 except for the recessed portion 212 corresponding to the aforementioned opening.

The movable structure 3 can be movably inserted into the outer cylinder 2 and defines a state before being inserted and a state after being inserted. The present invention does not limit the specific structure of the movable structure 3, as long as it can move linearly relative to the outer cylinder 2 along the length direction (axial direction) of the outer cylinder 2 and can rotate relative to the outer cylinder 2 in a self-rotating manner. In the embodiment, the movable structure 3 includes a movable body 31 and a connecting rod 32 that are linearly connected to each other; the connecting rod 32 is connected to the end surface 314 of the upper end of the movable body 31 (see FIG. 3) and penetrates the aforementioned necking hole 23; the movable body 31 can be movably (including linear movement and rotation) inserted into the outer cylinder 2, and in the state before being inserted, as shown in Figure 3, the lower end of the movable body 31 will partially protrude from the opening of the outer cylinder 2. A protruding section 315 is formed, and the lower end of the movable body 31 is also provided with an insertion hole 311 and a through hole 312 which are alternately connected to each other.

Wherein, the insertion hole 311 is opened from the lower end of the movable body 31 along the aforementioned length direction, and the through hole 312 is opened from the periphery of the movable body 31 along the other direction (radial) perpendicular to the length direction, and is preferably provided with Two piercing 312.

The two balls 4 are respectively accommodated in the two perforations 312, so they can move together with the movable structure 3, and in the state before being inserted, as shown in FIG. 3, each ball 4 will come from the outer end of each perforation 312 after being accommodated. A protruding portion 41 is partially protruded to form a protruding portion 41, and each protruding portion 41 is accommodated in the aforementioned recessed portion 212. When the ball 4 is carried by the movable structure 3 to move linearly together, the protrusion 41 will follow the movement to form a moving path (not shown in the figure), and the aforementioned pushing part 211 is located on the moving path and can push against the protrusion. 41.

The inserting structure 6 is used for inserting corresponding to the aforementioned inserting hole 311. The present invention does not limit the specific structure of the plug-in structure 6, as long as it can be plugged in corresponding to the plug-in hole 311 and can be buckled by the balls 4. In this embodiment, the plug-in structure 6 includes a seat 61 and a convex A plug post 62 of the base 61 is used for plugging in the plug hole 311 and has a card slot 621. The card slot 621 is used for the ball 4 to be buckled in so that the plug structure 6 is buckled in the movable position. The aforementioned lower end of structure 3. The object to be fixed 900 is fixed on the top surface of the base 61.

Thereby, as shown in FIGS. 2 to 5, as long as the plug post 62 is inserted into the plug hole 311, the object to be fixed 900 above the top surface of the base body 61 can be used to reverse the direction during the plugging process. The protruding section 315 sinks into the outer cylinder 2 so that the movable structure 3 with the balls 4 moves upward relative to the outer cylinder 2. At the same time, the protruding portion 41 of the ball 4 moves upward along the aforementioned moving path, and leaves the concave portion 212 during the upward movement and is pushed by the pushing portion 211, and the pushing portion 211 pushes the ball 4 in the reverse direction. Until it protrudes from the inner end of the perforation 312 (see FIG. 5) and snaps into the slot 621, the insertion structure 6 together with the object 900 to be fixed is snap-fixed to the movable structure 3 (in the inserted state), In this way, a screwless fixing effect can be achieved. As shown in the figure, the object to be fixed 900 is fixed without screws.

To release the buckle fixation, only a reverse linear movement external force is applied to the movable structure 3, so that the movable structure 3 moves down relative to the outer cylinder 2 to the aforementioned protruding section 315 to protrude again, and the ball 4 is no longer pushed against The pushing of the part 211 releases the buckle fixation in this way. At this time, as long as the plug structure 6 is pulled backwards, the ball 4 will be pushed by the part of the plug post 62 except the slot 621 and easily move toward the outer end of the perforation 312, and then the plug post 62 can be pulled out to make The movable structure 3 returns to the state before being inserted.

As mentioned in the previous paragraph, the reverse linear movement external force can be applied to the movable structure 3 by using an elastic element 5, or manually or by electric (pneumatic) movement. In this embodiment, the elastic element 5 is taken as an example for description. As shown in FIGS. 3 and 5, the elastic element 5 is sleeved on the connecting rod 32 and elastically supported on the end surface 314 of the movable body 31 and the inner top of the outer cylinder 2. Between the walls 22.

As shown in FIGS. 1 to 3, in order to position and maintain the buckled and fixed state of the ball 4 into the groove 621, the fixing device 100 of the present invention further includes a rotating positioning structure T.

The rotation positioning structure T includes a guide slot 24 and a protrusion 331 guided by the guide slot 24. Wherein, the guide groove 24 is opened in the outer cylinder 2 and has a longitudinal section 241 and a transverse section 242 connected end to end. The longitudinal section 241 is parallel to the aforementioned axial direction, and the transverse section 242 is parallel to the aforementioned radial direction; The movable body 31 is inserted into the longitudinal section 241.

Thereby, as shown in Figs. 3 to 5, when the movable structure 3 moves upward relative to the outer cylinder 2, the convex body 331 will follow the upward movement along the longitudinal section 241; as shown in Figs. 6 to 8, then, The movable structure 3 is controlled manually or electrically (pneumatically) to rotate relative to the outer cylinder 2 so that the convex body 331 rotates along the horizontal section 242 and rotates to be positioned in the horizontal section 242. In this way, the ball 4 can be buckled into the groove 621 and the buckled fixed state can be positioned and maintained. To release the positioning, just reverse the operation.

Preferably, the guide groove 24 and the convex body 331 can also be set to two. As shown in FIGS. 1 and 2, a socket 313 can be provided in the radial direction of the movable body 31, and a plug 33 is fixedly inserted into the socket 313, and both ends of the plug 33 protrude from the socket 313. In this way, the two convex bodies 331 can be formed.

In addition, although the aforementioned balls 4 and perforations 312 are arranged in two pairs, in practical applications, they can also be arranged in only one pair (not shown in the figure) or arranged in more than three pairs (not shown in the figure), no matter what The setting can achieve the same function and effect as the above. It should be noted that, as shown in FIG. 3, the inner end of the through hole 312 is formed with a ring of inner flanges (component symbols are not marked) to limit the ball 4 from falling into the insertion hole 311.

In other embodiments not shown in the drawings, the element used to reversely push the protruding section 315 may not only be the aforementioned object 900 to be fixed, but also the plug structure 6 itself. When the fixing device 100 of the present invention is designed to reversely push the protruding section 315 with the plug-in structure 6, the object 900 to be fixed is fixed on the bottom surface of the base 61, and the gap between the top surface of the base 61 and the slot 621 must be shortened. In this way, the top surface of the seat body 61 can be used to push the protruding section 315 back into the outer cylinder 2.

To sum up, the screwless fixing device of the present invention can indeed achieve the intended purpose of use and solve the shortcomings of the prior art. It fully meets the requirements of an invention patent application. The application is filed in accordance with the Patent Law. Please check and grant the patent for this case. , To protect the rights of inventors.

The above are only the preferred and feasible embodiments of the present invention, and are not limited to the scope of the present invention. Any equivalent structural changes made by using the description and drawings of the present invention are all included in the present invention. Within the scope of the rights, he shall be Chen Ming.

100: fixed device

1: fixed frame

2: Outer cylinder

24: Guide groove

241: Longitudinal Section

3: Activity structure

311: Socket

331: Convex

4: Ball

6: Plug-in structure

61: Block

62: plug post

621: card slot

900: Object to be fixed

T: Rotating positioning structure

Claims (10)

A screwless fixing device, comprising: an outer cylinder with a pushing part; a movable structure movably inserted into the outer cylinder and protruding from the outer cylinder to form a protruding section, the movable structure having mutually communicating At least one perforation and one insertion hole; at least one ball, accommodated in the perforation and protruding from the perforation to form a protruding portion, the pushing portion is located in the protruding portion formed by the ball following the movement of the movable structure On a moving path; and a plug-in structure having a card slot for the ball buckle; wherein the plug-in structure and the plug hole are plugged into each other, and the movable structure is received by the plug-in structure via the protruding section When pushed and moved relative to the outer cylinder together with the ball, the ball moves along the movement path through the protruding portion until it is pushed by the pushing portion to be buckled in the slot. A screwless fixing device is used for an object to be fixed and includes: an outer cylinder with a pushing part; a movable structure that can movably penetrate the outer cylinder and protrude from the outer cylinder to form a protruding section, The movable structure has at least one perforation and an insertion hole that communicate with each other; at least one ball is accommodated in the perforation and protrudes from the perforation to form a protruding portion, and the pushing portion is located at the protruding portion and is followed by the ball On a moving path formed by the movement of the movable structure; and a plug-in structure having a slot for the ball buckle, and the object to be fixed is fixed to the plug-in structure; wherein the plug-in structure and the plug-in structure The contact holes are inserted into each other, the movable structure is pushed by the object to be fixed via the protruding section to move with the ball relative to the outer cylinder, and the ball moves along the movement path via the protruding portion to be pushed against The part is pushed against and buckled in the card slot. The screwless fixing device according to claim 1 or 2, further includes a rotating positioning structure that positions the ball to maintain the buckle in the groove by controlling the movable structure to rotate relative to the outer cylinder. The screwless fixing device according to claim 3, wherein the rotation positioning structure includes a guide groove and a convex body guided by the guide groove, and the guide groove is provided in the outer cylinder and has a longitudinal section and a horizontal section , The convex body is arranged in the movable structure and inserted into the longitudinal section; the convex body moves relative to the outer cylinder through the movable structure and then moves along the longitudinal section, the convex body then moves relative to the outer cylinder through the movable structure Rotate and follow the rotation to the horizontal segment. The screwless fixing device according to claim 1 or 2, further comprising an elastic element, the movable structure includes a movable body and a connecting rod connected to the movable body, the movable body can be movably inserted into the outer cylinder The elastic element is sleeved on the connecting rod and elastically supported between the movable body and the outer cylinder. The screwless fixing device according to claim 5, wherein the protruding section is formed at one end of the movable body, the insertion hole and the perforation are both provided at the end, and the length of the insertion hole and the outer cylinder The directions are parallel, and the perforation crosses and communicates with the insertion hole. The screwless fixing device according to claim 5, wherein the outer cylinder has an inner peripheral wall, the inner peripheral wall includes the pushing portion and a recessed portion recessed relative to the pushing portion, the recessed portion accommodating the ball of the ball Bulge. The screwless fixing device according to claim 1, wherein the plug-in structure includes a base body and a plug-in post protruding from the base body, the plug-in post and the plug hole are inserted into each other and have the card slot , The protruding section is pushed by the seat body. The screwless fixing device according to claim 2, wherein the plug structure includes a base and a plug post protruding from the base, the plug post and the plug hole are plugged into each other and have the card slot . The screwless fixing device according to claim 1 or 2, wherein the ball and the perforation are both set in two, and each of the balls is respectively accommodated in each of the perforations and protrudes from each of the perforations to form two protrusions respectively.

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