CN212937345U - Traction apparatus - Google Patents

Abstract

The utility model discloses a tractor, which comprises a shell, a support piece, a rope, a telescopic piece, a knob and a second limit piece, wherein the support piece is rotatably arranged in the shell; the rope is supported on the supporting piece in a winding state, an accommodating space is formed in the middle of the rope, one end of the rope is connected to the supporting piece, and the other end of the rope is pulled to extend out of the shell; the telescopic piece is supported on the support piece in a winding state and is accommodated in the accommodating space, and one end of the telescopic piece is connected with the support piece; the knob, one end is installed in body rotatably relative to the support, another end stretches out of body, the knob is connected with another end of the telescopic part in the body, there is the first locating part on the knob; the second limiting piece is arranged on the support piece in a swinging mode, one end of the second limiting piece is abutted against the first limiting piece, and the second limiting piece is set to allow the knob to rotate towards one direction only. The utility model discloses a tractor can lose automatic rolling again when the haulage rope.

Description

Traction apparatus

Technical Field

The utility model belongs to the technical field of traction apparatus technique and specifically relates to a tractor is related to.

Background

In daily life, people often pull the pet by a retractor in order to prevent the pet from going loose. Currently, there are a variety of pet retractors available in the market, which generally include a retractor housing and a leash disposed in the housing, wherein the leash can be automatically retracted when the pet is detached. However, in actual use, because long-time tractive pet drags the haulage rope for some haulage ropes can't the automatic rolling in the casing, lead to the utilization ratio reduction of haulage rope.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a tractor can lose the automatic rolling function when haulage rope automatic rolling again.

According to an aspect embodiment of the present invention, a retractor includes:

a housing;

a support rotatably disposed within the housing;

a rope supported on the support in a wound state, a middle portion of the rope forming an accommodating space, one end of the rope being connected to the support, the other end of the rope being drawn out of the housing;

the telescopic piece is supported on the supporting piece in a winding state and is accommodated in the accommodating space, and one end of the telescopic piece is connected with the supporting piece;

the knob is arranged in the shell in a rotatable mode relative to the supporting piece, the other end of the knob extends out of the shell, the knob is connected with the other end of the telescopic piece in the shell, and a first limiting piece is arranged on the knob;

the second limiting part is arranged on the support in a swinging mode, one end of the second limiting part is abutted to the first limiting part, and the second limiting part is set to allow the knob to rotate towards one direction only.

According to the utility model discloses tractor has following beneficial effect at least: the knob rotates towards the direction of unwinding the rope, so that the telescopic piece connected with the knob is gradually contracted; after the knob is loosened, the telescopic piece is released, so that the knob rotates towards the rope winding direction, meanwhile, the second limiting piece clamped in the first limiting piece is pushed, the supporting piece and the knob rotate towards the rope winding direction together, and the rope is automatically wound.

According to some embodiments of the utility model, the knob is equipped with the draw-in groove, the other end embedding of extensible member in the draw-in groove.

According to some embodiments of the invention, the first locating part comprises a groove, and one end of the second locating part is inserted into the groove.

According to some embodiments of the utility model, support piece is the disc, support piece's central authorities are provided with the cavity, the extensible member is located in the cavity, support piece has seted up the circular recess along the outer peripheral face, the rope is located in the circular recess.

According to the utility model discloses a some embodiments still include pressing means, the casing is equipped with the breach, pressing means passes through the breach install extremely the casing, pressing means with be connected with first elastic component along pressing the direction between the casing, support piece's surface is equipped with the latch, pressing means supports under the state of being pressed and leans on the latch.

According to some embodiments of the present invention, the pressing mechanism includes a pressing portion and a latching portion, one end of the pressing portion is rotatably connected to the housing, the latching portion is rotatably mounted on the housing, the pressing portion is connected to the latching portion, and the latching portion rotates toward the supporting member and abuts against the latch in a state of pressing the pressing portion.

According to some embodiments of the utility model, pressing mechanism still includes first slider, it is equipped with the slot part to press the splenium, the bottom of slot part is equipped with the notch, first slider is installed in the slot part, just the one end of first slider is passed through the notch stretches into in the casing, first slider is followed the length direction of notch is portable.

According to some embodiments of the utility model, stretch into of first slider the one end of notch is equipped with the lug, shells inner wall is equipped with locking portion, the lug is in first slider is pressed and to under the state that the direction of locking portion promoted, with locking portion supports each other and closes.

According to the utility model discloses a some embodiments, but wobbling lid is installed to the lateral part of casing, be equipped with out the rope mouth on the lid, the lid lock is in the casing.

According to some embodiments of the present invention, the side portion of the housing is provided with a second slider which can be moved along the side portion of the housing, one end of the second slider is connected to the inside of the housing through a second elastic member, and the other end of the second slider is in a butt state on the cover in a closed state of the cover.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded view of a retractor according to an embodiment of the present invention.

Fig. 2 is a perspective view of a retractor according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of fig. 2.

Fig. 4 is an exploded view of a retractor according to an embodiment of the present invention.

Fig. 5 is a perspective view of a knob of a retractor in accordance with an embodiment of the present invention.

FIG. 6 is a perspective view of the interior of a retractor in accordance with an embodiment of the present invention

Fig. 7 is a partial enlarged view of a portion a in fig. 6.

Fig. 8 is an exploded view of a retractor in accordance with an embodiment of the present invention.

Fig. 9 is a perspective view of a retractor according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, a retractor according to an aspect of the present invention includes a housing 100, a support member 200, a rope 300, a telescopic member 400, a knob 500, and a second limiting member 600. Wherein the support 200 is rotatably disposed within the housing 100; the rope 300 is supported on the support 200 in a wound state, the middle of the rope 300 forms an accommodating space, one end of the rope 300 is connected to the support 200, and the other end of the rope 300 is drawn out of the housing 100; the extensible member 400 is supported on the support member 200 in a wound state and is accommodated in the accommodating space, and one end of the extensible member 400 is connected with the support member 200; one end of the knob 500 is rotatably installed in the housing 100 relative to the support member 200, and the other end extends out of the housing 100, the knob 500 is connected with the other end of the telescopic member 400 in the housing 100, and a first limiting member 510 is arranged on the knob 500; the second limiting member 600 is swingably mounted on the supporting member 200, and one end of the second limiting member 600 abuts against the first limiting member 510 and is disposed to allow the knob 500 to rotate only in one direction.

In the present embodiment, since the knob 500 is provided with the first limiting member 510, and the second limiting member 600 is configured to only allow the knob 500 to rotate in one direction, for example, the second limiting member 600 may be configured to allow the knob 500 to rotate in a direction in which the rope 300 is unreeled. When the knob 500 is rotated in a direction in which the rope 300 is unreeled, the extensible member 400 connected thereto is gradually contracted. After the knob 500 is released, the extensible member 400 is released, the knob 500 is rotated in the direction in which the rope 300 is wound, and since the rotation of the knob 500 in the direction in which the rope 300 is wound is restricted by the second restricting member 600 while the second restricting member 600 is mounted to the rotatable support member 200, the support member 200 is rotated together with the knob 500 in the direction in which the rope 300 is wound, and the rope 300 is automatically wound.

Referring to the drawings, the winding direction of the rope 300 is clockwise rotation, and the unwinding direction of the rope 300 is counterclockwise rotation.

In some embodiments, the housing 100 includes an upper shell 120 and a lower shell 130, and the connection manner between the upper shell 120 and the lower shell 130 is not particularly limited as long as the upper shell and the lower shell can be covered, and may be, for example, a screw connection. The lower case 130 is opened with, for example, a mounting hole 110 for extending the knob 500 out of the case 100. The supporter 200 is installed inside the case 100, for example, may be installed on an inner wall of the lower case 130 and rotate with respect to the lower case 130. The expansion member 400 may be a coil spring, a spiral spring, or the like expansion member 400 that can store mechanical energy. Knob 500 may extend into telescoping member 400 and interconnect with first end 400a of telescoping member 400. The connection mode can be conventional connection modes such as bonding, clamping, sleeving and the like, as long as the knob 500 can move together with the telescopic piece 400. In the present embodiment, the knob 500 includes a rotary column rotatably installed in the housing 100 and inserted into the telescopic member 400, and a rotary head on the supporter 200. When the knob 500 is rotated in a direction in which the rope 300 is unreeled, the telescopic member 400 may be contracted as the knob 500 is rotated, so that the telescopic member 400 is tensioned.

The first limiting member 510 is disposed on the outer circumferential surface of the rotating head, and one end of the second limiting member 600 is sleeved on the protruding shaft on the supporting member 200, so that the second limiting member 600 can swing on the supporting member 200 around the shaft, and the other end of the second limiting member 600 can abut against the first limiting member 510. The second limiting member 600 may be disposed in an arc structure bending toward the knob 500, so as to be capable of abutting against the first limiting member 510. In order to limit the rotation of the knob 500 to the maximum and push the supporting member 200 to rotate at the same time, the second limiting member 600 may be provided in several numbers. In this embodiment, two second limiting members 600 are provided, and the second limiting members 600 may be respectively disposed along the circumferential direction of the supporting member 200. In addition, when the knob 500 is rotated in the direction of winding the rope 300, the second stopper 600 can abut against the knob 500, so that the knob 500 can only tension the extensible member 400 in the unwinding direction of the rope 300.

When a portion of the rope 300 cannot be automatically wound into the supporting member 200, the knob 500 may be rotated in a direction in which the rope 300 is unwound, for example, in a counterclockwise direction (fig. 1), and in the process of rotating the knob 500 counterclockwise, one end of the second limiting member 600 close to the knob 500 abuts against the first limiting member 510 in sequence along the circumferential direction of the rotating head, and the telescopic member 400 connected to the knob 500 is gradually contracted and tensioned. When the knob 500 is loosened, the tensioned telescopic member 400 is released, and under the action of its pretension, the knob 500 automatically rotates along the winding direction of the rope 300, i.e. clockwise, and meanwhile, the knob 500 pushes the second limiting member 600 abutting against the first limiting member 510, so that the second limiting member 600 pushes the support member 200 to rotate clockwise, and the rope 300 is automatically wound.

Referring to fig. 3 and 5, in some embodiments, to facilitate the installation of the knob 500 in connection with the telescopic member 400, a lower portion of the knob 500 is provided with a catching groove 520, and the first end 400a of the telescopic member 400 may be inserted into the catching groove 520. Specifically, the locking groove 520 may be disposed along an axial direction of the knob 500, for example, the locking groove 520 may penetrate a radial direction of the rotary column and open from top to bottom along an axis of the rotary column. Preferably, the length of the locking groove 520 in the axial direction may be greater than the width of the telescopic member 400, so that, after the first end 400a of the telescopic member 400 is locked in the locking groove 520, the locking groove 520 may clamp the telescopic member 400, preventing the telescopic member 400 from being separated from the locking groove 520.

Referring to fig. 5, it is contemplated that the first limiting member 510 may be a protrusion protruding from the knob 500, or may be a groove corresponding to the knob 500, as long as the first limiting member 510 can be ensured to abut against the second limiting member 600. Specifically, in order to ensure that the second limiting member 600 can firmly abut against the first limiting member 510, the first limiting member 510 is a groove, and one end of the second limiting member 600 is inserted into the groove. The groove can be set to a non-return structure, namely the width of an opening of the groove is smaller than that of the bottom of the groove, and the included angle between the side wall of the groove and the bottom of the groove can be slightly smaller than 90 degrees. When the second limiting member 600 abuts against the groove, the sidewall of the groove may abut against the second limiting member 600, and when the knob 500 rotates along the winding direction (clockwise) of the rope 300, the second limiting member 600 may firmly abut against the groove, preventing the second limiting member 600 from coming off the groove. Thereby ensuring that the knob 500 can integrally drive the support member 200 to rotate along the winding direction of the rope 300 when rotating along the winding direction of the rope 300, thereby winding the rope 300.

Referring to fig. 2 and 3, in some embodiments, in order to save space for accommodating the rope 300, the supporting member 200 may be a circular disc, the circular disc is provided with a cavity 210 at the center, the telescopic member 400 is located in the cavity 210, the circular disc is provided with a circular groove 220 along the outer circumferential surface, the rope 300 is located in the circular groove 220, and the width and thickness of the circular groove 220 may be determined according to the size of the rope 300.

Referring to fig. 6, in some embodiments, the retractor further includes a pressing mechanism 700, a side portion of the housing 100 is opened with a notch 150 in a left-right direction thereof, the pressing mechanism 700 is mounted to the housing 100 through the notch 150, a first elastic member 710 is connected to one side of the pressing mechanism 700, the pressing mechanism 700 is interconnected with the inside of the housing 100 through the first elastic member 710, and the pressing mechanism 700 is pressed to eject the housing 100 or press the housing 100 in an up-down direction. In addition, the latch 230 is protruded from the surface of the supporter 200, the latch 730 capable of abutting against the latch 230 may be provided at the lower portion of the pressing mechanism 700, the latch 730 may be a latch 730 integrally formed at the body of the pressing mechanism 700, or the latch 730 may be a latch 730 interconnected with the body of the pressing mechanism 700, and when the pressing mechanism 700 is pressed, the latch 730 abuts against the latch 230, thereby restricting the rotation of the supporter 200. It should be noted that the first elastic member 710 may be a spring or other buffering element as long as the pressed pressing mechanism 700 can be ensured to be ejected from the housing 100.

Referring to fig. 6 and 7, it is conceivable that the pressing mechanism 700 includes a pressing part 720 and a catch 730, and a right end of the pressing part 720 may be rotatably coupled with an inner wall of the housing 100, for example, with an inner wall of the upper case 120. When the pressing portion 720 is pressed, the pressing portion 720 can rotate around the rotation axis and is pressed into the housing 100, and by rotatably coupling the pressing portion 720 into the housing 100, the pressing portion 720 can be prevented from excessively escaping or falling into the housing 100 due to the pressing. In addition, a card member 730 is rotatably installed inside the housing 100, for example, on an inner wall of the upper case 120, and one end of the card member 730 is connected to the pressing portion 720, so that, when the pressing portion 720 is pressed, the pressing portion 720 pushes the card member 730 to rotate around the rotation axis in a direction approaching the support member 200, and the other end of the card member 730 abuts on the latch 230. One end of the catch 730 may be configured to be able to mate with the latch 230 and to engage the latch 230. When the pet pulls out the rope 300, the pressing part 720 is pressed downwards, the pressing part 720 simultaneously pushes the clip 730 to rotate, and one end of the clip 730 which is not connected with the pressing part 720 rotates towards the supporting piece 200, so as to abut against the protruding latch 230, thereby preventing the supporting piece 200 from rotating, and therefore, the rope 300 can be prevented from being continuously pulled out.

Referring to fig. 7 and 8, in some embodiments, in order to facilitate pressing the pressing mechanism 700, the pressing mechanism 700 further includes a first slider 740, and the first slider 740 may be installed into the pressing part 720. For example, the pressing portion 720 may be provided with a groove portion 721, and the groove portion 721 may receive the first slider 740. The bottom of the slot portion 721 is provided with a notch 722, the lower portion of the first slider 740 can extend into the housing 100 through the notch 722, and the first slider 740 can move left and right along the length direction of the notch 722 by pushing the first slider 740. Specifically, the surface of the first slider 740 may be provided with a relief that can increase friction force, facilitating the pushing of the first slider 740.

With continued reference to fig. 7 and 8, in some embodiments, in order to define the position of the support member 200 when the escapement 730 abuts against the latch 230, one end of the first slider 740 protruding into the notch 722 is provided with a projection 741, and the locking portion 170 is provided on the inner wall of the housing 100. After the first sliding block 740 is pressed, the pressing portions 720 are simultaneously pressed, so that the clips 730 and the latches 230 abut against each other; then, the first slider 740 is pushed in the direction of the locking portion 170, and the projection 741 moves in the direction of the locking portion 170 along with the first slider 740, so that the projection 741 and the locking portion 170 abut against each other, and the pressing portion 720 is also fixed in the pressed state in the state where the projection 741 and the locking portion 170 abut against each other, and therefore, the latch 730 and the latch 230 are locked in the state where they abut against each other, the support member 200 is prevented from rotating, and the rope 300 is prevented from being pulled out continuously. Through the mutual abutting of the projection 741 and the locking portion 170, when the pressing portion 720 loses the pressing force, the clip 730 can always abut against the latch 230, so that the clip 730 and the latch 230 can still be locked when the manual continuous pressing is lost.

Referring to fig. 9, in some embodiments, a rotatable cover 160 is installed at a side of the case 100, the cover 160 may be snap-fitted to the case 100, and the cover 160 and the case 100 are coupled to each other by a rotation shaft such that the cover 160 may be rotated and opened about the rotation shaft. When it is necessary to draw out the rope 300 completely retracted into the housing 100 from the housing 100, the cover 160 may be opened to facilitate the removal of the rope 300. In addition, the cover 160 is provided with a rope outlet 161, and the rope 300 can extend outwards from the rope outlet 161, so that the space is saved.

With continued reference to fig. 9, in some embodiments, in order to facilitate opening the cover 160, the side of the housing 100 is provided with a second slider 180 that is slidable along the side of the housing 100, one end of the second slider 180 is connected inside the housing 100 by a second elastic member 190, and the other end of the second slider 180 abuts against one side of the cover 160. When the second slider 180 is pushed in the direction of the second elastic member 190, for example, when the second slider 180 is pushed to the left, the second elastic member 190 is compressed, and the one side of the cover 160 loses the contact with the second slider 180, so that the cover can be opened with respect to the housing 100; when the second elastic member 190 is released, the second slider 180 is pushed rightward by the second elastic member 190, so as to be rested on one side of the cover 160, and the cover 160 is locked. It is contemplated that the second elastic member 190 may be a spring.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A retractor, comprising:

a housing;

a support rotatably disposed within the housing;

a rope supported on the support in a wound state, a middle portion of the rope forming an accommodating space, one end of the rope being connected to the support, the other end of the rope being drawn out of the housing;

the telescopic piece is supported on the supporting piece in a winding state and is accommodated in the accommodating space, and one end of the telescopic piece is connected with the supporting piece;

the knob is arranged in the shell in a rotatable mode relative to the supporting piece, the other end of the knob extends out of the shell, the knob is connected with the other end of the telescopic piece in the shell, and a first limiting piece is arranged on the knob;

the second limiting part is arranged on the support in a swinging mode, one end of the second limiting part is abutted to the first limiting part, and the second limiting part is set to allow the knob to rotate towards one direction only.

2. The retractor of claim 1, wherein said knob is provided with a slot, and the other end of said extendable element is inserted into said slot.

3. The retractor of claim 1, wherein said first retaining member includes a recess, and wherein one end of said second retaining member is inserted into said recess.

4. The retractor of claim 1, wherein said support member is disk-shaped, a cavity is disposed in the center of said support member, said extendable member is disposed in said cavity, said support member defines a circular groove along its outer circumference, and said cable is disposed in said circular groove.

5. The retractor of claim 1, further comprising a pressing mechanism mounted to said housing, a first resilient member connected between said pressing mechanism and said housing in a pressing direction, said support member having a surface provided with a latch, said pressing mechanism abutting against said latch in a pressed state.

6. The retractor of claim 5, wherein said pressing mechanism includes a pressing portion having one end rotatably connected to said housing and a catch rotatably mounted to said housing, said pressing portion being connected to said catch, said catch being rotated toward said support member and abutting against said latch in a state where said pressing portion is pressed.

7. The retractor of claim 6, wherein said pressing mechanism further comprises a first slider, said pressing portion has a slot, said slot has a notch at the bottom, said first slider is mounted in said slot, and one end of said first slider extends into said housing through said notch, said first slider is movable along the length of said notch.

8. The retractor of claim 7, wherein a projection is disposed on an end of said first slider extending into said slot, and a locking portion is disposed on an inner wall of said housing, said projection abutting against said locking portion in a state that said first slider is pushed in a direction of said locking portion.

9. The retractor according to claim 1, wherein a swingable cover is mounted to a side of said housing, said cover being provided with a cord outlet, said cover being fastened to said housing.

10. The retractor according to claim 9 wherein said side portion of said housing is provided with a second slider movable along said side portion of said housing, one end of said second slider being connected to the interior of said housing by a second resilient member, the other end of said second slider abutting on said cover in a closed condition of said cover.

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