TWI663028B - Sleeve - Google Patents

Abstract

A sleeve includes a grip body and a set of joint structures. The gripping system extends in a first direction and has a cap ferrule end, and the cap ferrule end has an end face. The socket structure is disposed on the end surface and has a set of inner walls of the ring, and the inner wall of the sleeve ring forms a space with the end surface. The socket space has a set of joint depths in the first direction.

Description

Sleeve

The present invention relates to a sleeve, and more particularly to a sleeve for driving a terminal.

Generally speaking, in the motor device, it is often seen that a binding post is provided on the device housing, which can be used to electrically connect the internal power supply and be used for externally connecting other electronic connectors. The terminal is also called a doctor terminal. The external electronic connector can be, for example, a banana plug or a ring terminal.

Referring to the first to fourth figures, the first figure shows a perspective exploded view of a prior art sleeve for a terminal; the second figure shows a perspective view of a prior art sleeve socket; The figure is a schematic view of the AA of the second figure; the fourth figure is the schematic view of the BB of the second figure. As shown in the first to fourth figures, a terminal 200 includes a first backing ring 201, a second backing ring 202, a terminal body 203, and a cam lock cap 204. When the terminal 200 is mounted on a board 300, the first back ring 201 and the second back ring 202 are respectively disposed on two sides of the board 300, so that the terminal body 203 passes through the first back ring 201 and the board. The through hole (not shown) of the body 300 and the second backing ring 202 are then screwed to the terminal body 203 by the cam lock cap 204, thereby screwing the cam lock cap 204 to the terminal body. 203.

As described above, since the user holds the cam lock cap 204 with a limited area, an auxiliary sleeve PA100 is generally used to lock the cam lock cap 204 to the terminal body 203 and the first backing ring 201; The auxiliary sleeve PA100 has a sleeve body PA1, and the sleeve body PA1 is provided with a sleeve groove PA11, so that when the sleeve groove PA11 is sleeved on the cam lock cap 204, the sleeve groove PA11 and the tapered outer wall 2041 are penetrated. The bumps 20411 interfere to drive the cam lock cap 204 to rotate. In addition, the socket groove PA11 has a groove depth PAd1, and since the socket groove depth PAd1 approximates the bump length b1 of the protrusion 20411, when the socket groove PA11 is sleeved on the cam lock cap 204, the auxiliary sleeve The torque output by the PA 100 is almost completely transmitted to the cam lock cap 204.

However, in actual use, in order to lock the cam lock cap 204 to the terminal body 203, the user usually continues to apply the torque when tightening to ensure that the cam lock cap 204 can be firmly locked to the terminal body 203. However, when the torque applied by the user is too large, the terminal body 203 is easily broken or deformed due to the inability to withstand excessive torque, or the deformation of other members of the terminal 200 is damaged, resulting in the terminal 200 being unable to be used normally. Or the service life is reduced.

In the prior art, in order to lock the cam lock cap to the terminal body, the user usually uses the auxiliary sleeve to lock, but when the torque applied by the user is too large, the terminal body or other components are easily damaged. Therefore, it is an object of the present invention to provide a sleeve that can effectively prevent excessive torque from being applied to the cam lock cap.

In order to achieve the above object, the present invention provides a sleeve for driving a binding post of a binding post to a terminal body of the binding post. The cam lock cap has a tapered outer wall and a plurality of A bump protruding from the outer wall of the tapered outer shape and having a bump between each other, and each bump has a length of a bump, and the sleeve comprises a holding body and a set of joint structures.

The grip system extends in a first direction and has a lock cap sleeve end, and the lock cap sleeve end has an end surface. The socket structure is disposed on the end surface and has an inner wall of the sleeve ring matched with the outer wall of the tapered outer shape, and the inner wall of the sleeve ring is formed to form a set of space, and the socket space has a set of connections in the first direction. Depth, the socket depth is less than the bump length.

In an auxiliary technical means derived from the above-mentioned necessary technical means, the socket structure comprises a plurality of extension cylinders and an elastic sleeve ring. A plurality of extended column systems respectively extend from the end surface in the first direction. The elastic sleeve ring is coupled to the extension cylinder and has an inner wall of the sleeve ring, and the inner wall of the sleeve ring is provided with a plurality of locking card to round corners and a plurality of unlocking cards to fill the corners. The rounded corners and the unlocking cards are alternately arranged with each other, and the curvature of each of the locking cards is smaller than the curvature of each of the unlocking cards. Preferably, the extension cylinder has a first length, and the elastic sleeve ring has a second length, and the sum of the first length and the second length is equal to the socket depth.

In an auxiliary technical means derived from the above-mentioned necessary technical means, the sleeve further comprises at least one pushing structure, which is disposed on a side of the holding body and extends in the first direction.

In the auxiliary technical means derived from the above-mentioned necessary technical means, the length of the bump having a socket depth of less than 70%

Since the sleeve depth of the socket space is smaller than the length of the bump of the bump, the contact area between the inner wall of the sleeve ring and the outer wall of the cone is effectively reduced, and the locking of the inner wall of the sleeve ring is rounded up. It is set to a rounded angle, and even the elastic sleeve ring and the extension cylinder form a socket structure, so when the torque applied by the sleeve to the cam lock cap is too large, the sleeve is easily slipped due to the small contact area with the cam lock cap. The cam lock cap is prevented from applying excessive torque to the terminal body, and the terminal body is broken.

PA100‧‧‧Auxiliary sleeve

PA1‧‧‧Sleeve body

PA11‧‧‧ socket

PAd1‧‧‧ socket depth

100‧‧‧ sleeve

1‧‧‧ Holding the body

11‧‧‧Lock cap sleeve end

12‧‧‧Lock cap sleeve end

111‧‧‧ end face

2‧‧‧Sleeve structure

21‧‧‧Extended cylinder

22‧‧‧Flexible ferrule ring

221‧‧‧ Socket ring inner wall

2211‧‧‧Lock card to rounded corners

2212‧‧‧Unlock card to fillet

3‧‧‧ push structure

200‧‧‧ binding posts

201‧‧‧First pad

202‧‧‧Second cushion

203‧‧‧ terminal body

204‧‧‧ cam lock cap

2041‧‧‧Conical outer wall

20411‧‧‧Bumps

300‧‧‧ board

SS‧‧‧ socket space

D1‧‧‧first length

D2‧‧‧second length

L1‧‧‧ first direction

L2‧‧‧ second direction

D3‧‧‧Locking direction

D4‧‧‧ unlock direction

B1‧‧‧bump length

The first figure shows a perspective exploded view of a prior art sleeve for a terminal; the second figure shows a perspective view of a prior art sleeve socket; the third figure is a cross-sectional view of the AA of the second figure; 4 is a schematic view of a BB section of the second embodiment; a fifth diagram showing a perspective view of a sleeve provided by a preferred embodiment of the present invention; and a sixth diagram showing a sleeve for providing a preferred embodiment of the present invention. FIG. 7 is a perspective view showing the sleeve of the preferred embodiment of the present invention for socketing on the terminal; FIG. 8 is a CC cross-sectional view of the seventh figure. And the ninth figure is a schematic diagram of the DD section of the seventh figure.

Specific embodiments of the present invention will be described in more detail below with reference to the drawings. Advantages and features of the present invention will be apparent from the description and appended claims. It should be noted that the drawings are all in a very simplified form and both use non-precise proportions, and are only for convenience and clarity to assist the purpose of the embodiments of the present invention.

Please refer to the fifth drawing, which is a perspective view showing a sleeve provided by a preferred embodiment of the present invention. As shown in the fifth figure, a sleeve 100 includes a holding body 1, a socket structure 2, and two pushing structures 3 (only one is shown).

The holding body 1 extends along a first direction L1, and has a lock cap sleeve end portion 11 and a lock cap sleeve end portion 12, and the lock cap sleeve end portion 12 extends in the first direction L1 to the lock cap sleeve The end portion 11; wherein the lock cap sleeve end portion 11 has an end surface 111.

The socket structure 2 comprises four extension cylinders 21 (only one is shown) and an elastic sleeve ring 22. The four extension cylinders 21 are integrally formed integrally extending from the end surface 111 in the first direction L1. The elastic sleeve ring 22 is integrally formed integrally with the four extension cylinders 21 and has a set of ring inner walls 221, and the sleeve ring inner wall 221 is provided with four locking cards to fill the corners 2211 and four unlocking The card is rounded to the corner 2212. The four locking card abutments 2211 are staggered with the four unlocking card corners 2212, and the curvature of each locking card abutment 2211 is less than the curvature of each of the unlocking cards 2222. Wherein, the extension cylinder 21 and the elastic sleeve ring 22 are further The end surface 111 defines a set of joint spaces SS, and the extension cylinder 21 has a first length d1 (indicated in the eighth figure) along the first direction L1, and the elastic sleeve ring 22 has a second length along the first direction L1. D2 (labeled in the eighth figure), the sum of the first length d1 and the second length d2 is equal to a set of joint depth (not shown), that is, the socket space SS has a socket depth in the first direction L1.

The second pushing structure 3 is symmetrically disposed on both side edges of the holding body 1 and extends in the first direction L1, respectively.

Please refer to the sixth to ninth drawings. The sixth figure shows a perspective exploded view of the sleeve provided by the preferred embodiment of the present invention for socketing on the terminal. The seventh figure shows a preferred embodiment of the present invention. The provided sleeve is used for the three-dimensional schematic diagram of the socket. The eighth figure is a CC cross-sectional view of the seventh figure; the ninth figure is the DD cross-sectional view of the seventh figure.

As shown in the fifth to ninth, the sleeve 100 is applied to a binding post 200 to a plate 300. The binding post 200 includes a first backing ring 201 and a second The backing ring 202, a terminal body 203 and a cam lock cap 204. In the operation of the actual installation, the first backing ring 201 and the second backing ring 202 are respectively disposed on the two sides of the board body 300, and the terminal body 203 is sequentially passed through the first backing ring 201 and the through hole of the board body 300. (not shown) and the second backing ring 202, and the terminal body 203 is more engaged with the first backing ring 201, and the part of the terminal body 203 that passes through the second backing ring 202 is further made of a hexagonal nut (not shown). fixed.

As described above, the cam lock cap 204 is screwed to the terminal body 203, and the sleeve 100 of the present invention is used for socketing the cam lock cap 204. The driving cam cap 204 is screwed to the terminal body 203. The cam lock cap 204 has a tapered outer wall 2041 and four protrusions 20411 protruding from the tapered outer wall 2041 and facing each other, and each bump 20411 Each has a bump length b1, and the sleeve depth of the sum of the first length d1 and the second length d2 is smaller than the bump length b1, and the inner wall 221 of the socket ring is matched with the tapered outer wall 2041. In addition, the sleeve depth of the sleeve 100 of the present invention is less than 70% of the bump length b1, and in the present embodiment, the sleeve depth is about 50% to 60% of the bump length b1.

As described above, in actual operation, when the user grip sleeve 100 is sleeved on the cam lock cap 204 and the inner wall 221 of the sleeve ring is cooperatively contacted with the tapered outer wall 2041, the user can follow a locking direction. D3 rotates the sleeve 100, thereby driving the cam lock cap 204 to rotate in the locking direction D3 to approach the first backing ring 201 in the first direction L1. When the cam lock cap 204 abuts against the first backing ring 201, since the cam lock cap 204 can no longer advance in the first direction L1, the torque applied by the user rotating the sleeve 100 in the locking direction D3 will be The rotation of the cam lock cap 204 is locked to the torque of the terminal body 203 and the first backing ring 201, and since the sleeve 100 of the present invention is rotated in the locking direction D3, it is offset by the locking card to the rounded corner 2211. The bumps 20411, and since the locking card to the rounded corners 2211 are all rounded angles, when the torque applied by the sleeve 100 to the cam lock cap 204 is too large, the sleeve 100 is easily slanted due to the locking of the rounded corners 2211. Guided and slid off, the sleeve 100 is withdrawn from the cam lock cap 204 in a second direction L2.

On the other hand, since the sleeve structure 2 of the sleeve 100 of the present invention is constituted by the extension cylinder 21 and the elastic sleeve ring 22, when the elastic sleeve ring 22 which is in contact with the cam lock cap 204 is excessively twisted, can The snap-in relationship between the elastic sleeve ring 22 and the cam lock cap 204 is released by a slight elastic deformation.

It should be particularly noted that since the sleeve depth of the sleeve 100 of the present invention is less than 70% of the bump length b1, when the sleeve 100 is sleeved on the cam lock cap 204, the locking card can be effectively reduced. The corner 2211 snaps against the area of the projection 20411, making it easier for the sleeve 100 to disengage from the cam lock cap 204 when the torque is excessive.

In addition, when the user wants to rotate the cam lock cap 204 away from the terminal body 203 and the first backing ring 201 in the second direction L2 through the sleeve 100, the user rotates in an unlocking direction D4 opposite to the locking direction D3. At this time, the inner wall 221 of the socket ring is locked by the unlocking card to the rounded corner 2212 against the bump 20411, and since the unlocking card is not rounded by the rounded corner 2212, the sleeve 100 can effectively loosen the cam lock cap 204.

In summary, since the sleeve depth of the socket space is smaller than the length of the bump of the bump, the contact area between the inner wall of the sleeve ring and the outer wall of the cone is effectively reduced, thereby applying the sleeve to the cam. When the torque of the lock cap is too large, the sleeve is easily slipped due to the small contact area with the cam lock cap, and the cam lock cap is prevented from applying excessive torque to the terminal body, thereby causing the terminal body to be broken; wherein, since the present invention is more socketed The locking card of the inner wall of the ring is rounded at a rounded corner, so that the sleeve can be more easily slipped off the card with the cam lock cap. In addition, since the socket structure of the present invention is composed of an elastic sleeve ring and an extension cylinder, the elastic sleeve ring has a space for elastic deformation compared with the socket space of the prior art. In practice, the user The maximum twist that can be applied to the elastic socket ring can be controlled by factors such as the thickness, width or material of the elastic socket ring. The force effectively prevents the sleeve from applying excessive torque to the cam lock cap, which causes the terminal body to break or deform and damage other components of the terminal.

The above is only a preferred embodiment of the invention and is not intended to limit the invention. Any changes in the technical means and technical contents disclosed in the present invention may be made by those skilled in the art without departing from the technical means of the present invention. The content is still within the scope of protection of the present invention.

Claims (5)

a sleeve for driving a binding post to be screwed to a terminal body of the binding post, the cam lock cap having a tapered outer wall and a plurality of protruding outer walls from the tapered outer wall And a bump between each other, and each of the bumps has a bump length, and the sleeve comprises: a holding body extending along a first direction and having a lock cap sleeve end, the lock The cap sleeve end portion has an end surface; and a set of joint structure is disposed on the end surface and has an inner wall of the sleeve ring matched with the tapered outer wall, and the inner wall of the sleeve ring is formed into a set The space is connected, and the socket space has a set depth in the first direction, and the socket depth is less than the length of the bump. The sleeve of claim 1, wherein the sleeve structure comprises: a plurality of extension cylinders extending from the end surface in the first direction; and an elastic sleeve ring coupled to the sleeve The extension cylinder has an inner wall of the sleeve ring, and the inner wall of the sleeve ring is provided with a plurality of locking card to round corners and a plurality of unlocking cards, and the locking cards are rounded and rounded. The unlocking cards are alternately arranged with each other, and the curvature of each of the locking cards is smaller than the curvature of each of the unlocking cards. The sleeve of claim 2, wherein the extension cylinders have a first length, and the elastic sleeve has a first The two lengths, the sum of the first length and the second length is equal to the socket depth. The sleeve of claim 1, further comprising at least one pushing structure disposed on a side of the holding body and extending along the first direction. The sleeve of claim 1, wherein the sleeve has a depth of less than 70% of the length of the bump.