KR101568152B1

KR101568152B1 - Belt tightening apparatus

Info

Publication number: KR101568152B1
Application number: KR1020150078369A
Authority: KR
Inventors: 김동진
Original assignee: 주식회사전우정밀
Priority date: 2015-06-03
Filing date: 2015-06-03
Publication date: 2016-07-20

Abstract

A belt tightening device is disclosed. The belt tightening device of the present invention is characterized in that the belt retracting portion includes a pair of winding pieces provided with concave grooves continuously along the longitudinal direction thereof so that both ends of the pair of winding pieces can be respectively inserted into the pair of ratchet disks And an insertion hole having a shape corresponding to the wound piece is provided. According to the present invention, a protruding area is provided on one surface of each of a pair of ratchet discs that can be brought into contact with the main body to reduce the contact area with the main body, or a plurality of contact protrusions are provided apart from each other, It is possible to further prevent the ratchet disk from being unable to rotate due to foreign matter or the like.

Description

[0001] BELT TIGHTENING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt tightening device, and more particularly, to a belt tightening device that is capable of preventing a component from being separated and separated from a vehicle during operation, To a belt tightening device capable of increasing the durability of the device.

Generally, in the case of a lorry, a large amount of luggage is loaded on a road, and an accident that a vehicle falls on the road due to a belt loosened during a high-speed running is frequently occurred. Cargo that falls during operation will fall on the vehicle in the next lane or interfere with the course and cause a major accident.

In order to prevent the occurrence of such a safety accident, a sling belt is used as an example for fixing the cargo. The sling belt is tightly pulled by the belt tightening device, so that the cargo can be firmly fixed. Here, the sling belt refers to a general fixed belt used for fixing a cargo to a freight car.

However, in the conventional belt fastening device, when the vehicle is normally running, the sling belt can be sufficiently pulled and fixed. However, when an external force is applied to the running vehicle, the coupling force of the related parts becomes weak, do.

In addition, in the conventional belt fastening apparatus, when the foreign matter such as sand or dust penetrates into the contact surface portion which rotates in contact with each other, the related configuration is also difficult to smoothly rotate.

Korean Patent Laid-Open No. 10-2012-0122648 (disclosed on Nov. 07, 2012)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide an air- And to provide a belt tightening device capable of increasing durability.

In order to achieve the above object, according to the present invention, there is provided a vehicle comprising: a body; a body fixing part provided on one side of the body and capable of being fixed to the body; a belt winding part provided on the other side of the body to wind the sling belt; A pair of ratchet disks coupled to the belt winding portion and rotatable about the belt winding portion so as to be able to pull the sling belt, Wherein the belt retracting portion includes a pair of winding pieces provided with concave grooves continuously along a longitudinal direction of the belt retracting portion, wherein both ends of the pair of winding pieces are provided on the pair of ratchet discs And the insertion hole having a shape corresponding to that of the wound piece is provided so as to be insertable into each of the insertion holes.

According to the above-described belt fastening apparatus of the present invention, since the concave groove is provided in the wind-up piece, the material cost is reduced to reduce the manufacturing cost as well as to reduce the weight of the entire apparatus. Accordingly, the user can easily carry the portable device with less power.

In addition, by providing a corrosion area on the outer surface of a pair of wind-up pieces capable of being brought into contact with the sling belt or providing a plurality of fine contact projections, the mutual contact area between the wind-up piece and the sling belt can be increased to smoothly wind the sling belt have.

In addition, a protruding area may be provided on one surface of each of the pair of ratchet discs that can contact the main body to reduce the contact area with the main body, or a plurality of contact protrusions may be provided so as to be spaced apart from each other, It is possible to further prevent the ratchet disk from being unable to rotate due to the penetration.

By adopting a structure in which guide grooves are respectively provided in the elastic fastening piece and the main body elastic fastening piece and the guide groove is engaged in the inner wall forming the slit hole and a pressing spring is provided in the handle body and the main body, The mutual engagement force between the elastic fastening piece and the handle body and the main body can be further improved.

1 is a perspective view showing a belt fastening apparatus according to an embodiment of the present invention.
2 is an exploded perspective view of FIG.
3 is a perspective view illustrating a belt winding unit and a ratchet disk in a belt fastening apparatus according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a contact state of a belt winding part and a sling belt in a belt tightening device according to an embodiment of the present invention.
5 is a cross-sectional view showing various modifications of the ratchet disk in the belt fastening apparatus according to the embodiment of the present invention.
6 is a perspective view showing an elastic fastening piece and a spring supporting bracket in a belt fastening apparatus according to an embodiment of the present invention.
7 is a view showing a state in which a pressure spring is provided in a belt tightening device according to an embodiment of the present invention.
8 is a front view showing a part of a belt tightening device according to another embodiment of the present invention.
9 is a front view showing a hook of a belt fastening device according to another embodiment of the present invention.
10 is a sectional view taken along the line AA in Fig.
11 is a view showing another example of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 1 is a perspective view showing a belt fastening apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a perspective view of a belt fastening unit and a ratchet disk in a belt fastening apparatus according to an embodiment of the present invention. 4 is a cross-sectional view showing a state in which the belt winding unit and the sling belt are in contact with each other in the belt tightening apparatus according to the embodiment of the present invention. FIG. 5 is a cross- FIG. 6 is a perspective view showing an elastic fastening piece and a spring supporting bracket in a belt fastening device according to an embodiment of the present invention, and FIG. 7 is a perspective view showing the elastic fastening piece and the spring supporting bracket in a belt tightening device according to an embodiment of the present invention, Fig.

The belt tightening device according to the preferred embodiment of the present invention tightens a sling belt for securing a cargo to a freight car, so that it is possible to prevent departure and separation of the related parts as compared with the conventional structure, So that the related parts can be smoothly rotated, thereby enhancing the durability of the entire apparatus.

Hereinafter, the present invention will be described in detail with reference to Examples.

1 and 2, a belt tightening apparatus according to an embodiment of the present invention includes a main body 100, a body fixing portion (not shown) provided at one side of the main body 100 and capable of being fixed to a body (not shown) A belt winding portion 300 provided on the other side of the main body 100 and capable of winding the sling belt 10 and a belt winding portion 300 rotatably coupled to the main body 100 to rotate the belt winding portion 300, A pair of ratchet discs 500 which are coupled to be rotatable at the same time as the belt take-up unit 300 and at least partly engaged with the handle unit 400, .

First, the main body 100 is formed of a pair of spaced apart plates. A body fixing part fixing hole (not shown) is provided on one side of the main body 100 so that the body fixing part 200 can be fastened. On the other side, a belt winding part insertion hole (101). Here, the body fixing part 200 may be coupled to the main body 100 through another bolt or the like, and the fixing structure of the belt winding part 300 will be described later.

In the present invention, a structure for elastically supporting a body elastic resilient piece 600 to be described later is provided at one side of the main body 100, and specifically, a spring engaging projection 612 of the elastic resilient body 600 penetrates A protrusion through hole 102 is provided so that a detailed description of the coupling structure of the related parts will be given later.

Next, the vehicle body fixing unit 200 is fixed to a vehicle body (not shown) on one side of the main body 100 and includes a fixing rod (not shown) coupled to the main body 100 through a bolt connection or the like, A belt 201 hooked on the rod, and a hooking hook 202 connected to an end of the belt 201 and capable of engaging with the vehicle body (not shown) substantially.

The belt winding portion 300 is provided to wind the sling belt 10 on the other side of the main body 100 and is capable of rotating the handle portion 400 to be described later and rotating the pair of ratchet disks 500 So that the sling belt 10 is wound while being rotated.

The belt winding unit 300 is coupled to the belt winding unit insertion hole 101 formed in the main body 100 through a separate fixing pin 303 after the both ends thereof are inserted into the belt winding unit insertion hole 101, 300 may be prevented from being detached to the outside of the main body 100.

3, in the present invention, the belt winding unit 300 includes a pair of winding pieces 301 provided with concave grooves 302 continuously along the longitudinal direction thereof. Specifically, the pair of wrapping pieces 301 are coupled to the main body 100 with the concave grooves 302 facing each other, and the sling belt 10 can be supplied between the pair of wrapping pieces 301 have.

As described above, the belt winding unit 300 includes the pair of wound pieces 301 in which the concave grooves 302 are continuously formed along the longitudinal direction. Thus, the present invention can reduce the material cost due to the formation of the concave grooves 302 The manufacturing cost can be reduced and the weight can be reduced, so that the weight of the entire device can be reduced. Therefore, the user can easily carry the portable device with less power.

On the other hand, since the belt winding portion 300 is composed of a pair of the winding pieces 301 each having the concave groove 302 formed therein, the worker is required to wind the end portion of the sling belt 10 to the belt winding portion 300 A phenomenon that the sling belt 10 slips in the initial stage and is not smoothly wound on the pair of wound pieces 301 may occur.

The sling belt 10 is wound around the sling belt 10 at the initial point of time when the operator winds the end of the sling belt 10 on the belt winding portion 300. [ The smooth winding operation of the sling belt 10 due to the reduction of the mutual contact area may occur unstably in some cases.

The present invention adopts the following structure so as to reliably wind up the sling belt 10 even if the contact area with the sling belt 10 is relatively reduced.

For example, as shown in Fig. 4 (a), an outer surface of a pair of wind-off pieces 301 capable of coming into contact with the sling belt 10, for example, a pair of wind- Area 304 can be provided. Here, the corrosion zone 304 means a portion that is made to further increase the mutual contact force with the related structure.

Here, when the pair of wound pieces 301 are made of a metal material and manufactured through a pressing process, the corrosion area 304 can be formed by the shape and structure of a press punch (not shown). As another example, when the pair of wound pieces 301 are made of a plastic material, the corrosion area 304 can be realized by applying a corrosive effect to the injection mold at the time of manufacturing the injection mold.

As another example, as shown in Fig. 4 (b), an outer surface of a pair of wind-off pieces 301 capable of coming into contact with the sling belt 10, for example, a pair of wind- A plurality of fine contact protrusions 305 may be provided so as to be in fine contact with the belt 10. [ Such a fine contact protrusion 305 can increase the contact area between the pair of wound pieces 301 and the sling belt 10 in the same manner as the corrosion area 304 described above.

The present invention is not limited to the case where the corrosion area 304 is provided in the pair of wrapping pieces 301 or the plurality of fine contact protrusions 305 is provided so that the distance between the pair of wrapping pieces 301 and the sling belt 10 It is possible to smoothly wind the sling belt 10 even if the mutual contact area is reduced relative to the conventional product structure.

Further, in the present invention, the both end regions of each of the pair of the wound-up pieces 301 which can be brought into contact with the sling belt 10 may be provided with planar regions for increasing mutual contact areas.

1 and 2, the handle portion 400 is pivotally coupled to the main body 100 to rotate the belt winding portion 300 so that the sling belt 10 can be pulled. As shown in FIGS. 1 and 2, the pair of ratchet discs 500 are rotatably coupled to the belt take-up unit 300 at the same time so that at least a part of the ratchet disc 500 is engaged with the handle unit 400.

The belt fastening apparatus according to the embodiment of the present invention has a structure in which a ratchet disk 500 and a handle body 401 are sequentially connected to both sides of the main body 100. When a worker moves the handle body 401 to one side So that the belt winding unit 300 can be rotated in one direction by rotating the pair of ratchet discs 500 in one direction. The main body 100 is provided with a body elastic resilient piece 600, which will be described later, in order to limit the rotation of the pair of ratchet discs 500 in the reverse direction, and a detailed description thereof will be given later.

3, a pair of ratchet discs 500 are respectively inserted into the pair of ratchet discs 500 so that both ends of the pair of the ratchet discs 500 can be inserted into the pair of ratchet discs 500, The insertion hole 510 has a shape corresponding to that of the wound-up piece 301. That is, since the insert hole 510 has a shape corresponding to the cross-sectional shape of the wound-up piece 301, when the operator rotates the handle 400 in one direction, the pair of ratchet disks 500 and the pair of The winding piece 301 can be rotated at the same time.

In the present invention, a pair of ratchet discs 500 are provided to be in contact with both side surfaces of the main body 100. When foreign substances are inserted between both outer surfaces of the main body 100 and the pair of ratchet discs 500 , The rotation of the pair of ratchet discs 500 may not be smoothly performed. In addition, the belt fastening apparatus according to the embodiment of the present invention is frequently used in a work environment where dust and other foreign matter can easily be generated. For example, when a worker performs a fastening operation of any one of the lashing belts The remaining belt tightening devices may be placed on the ground. In this case, dust and foreign matter may penetrate through the gap between the main body 100 and the pair of ratchet discs 500, so that the ratchet disc 500 may not be smoothly rotated or severely rotated .

In order to solve this problem, in the present invention, the mutual contact area between the main body 100 and the pair of ratchet discs 500 is reduced compared to the conventional structure, so that even when a bad condition as described above occurs, the pair of ratchet discs 500 rotate relatively So that it is easy to use.

5A, a pair of ratchet discs 500 capable of being in contact with the main body 100 is provided with insertion holes 510 so as to reduce the contact area with the main body 100, And a protruding region 520 located on the inner side can be provided. In addition, although not shown in the drawings, protruding areas 520 may be provided on both sides of the main body 100, which are in contact with the pair of ratchet discs 500, respectively.

As described above, the protruding area 520 reduces the mutual contact area between the main body 100 and the pair of ratchet discs 500 relative to the conventional structure, so that the gap between the main body 100 and the ratchet disc 500 It is possible to further prevent the ratchet disk 500 from being incapable of rotating even when a foreign matter or the like has penetrated into the ratchet disk 500.

5 (b), a pair of ratchet discs 500 that can contact the main body 100 may have a contact area with the main body 100 on one surface of each of the ratchet discs 500, The plurality of contact protrusions 530 may be spaced apart from each other. Although not shown in the drawing, a plurality of contact protrusions 530 may be provided on both sides of the main body 100, which are in contact with the pair of ratchet discs 500, respectively.

The contact protrusion 530 can reduce the mutual contact area between the main body 100 and the pair of ratchet discs 500 relative to the conventional structure in the same manner as the protruding area 520 described above, It is possible to further prevent the ratchet disk 500 from being incapable of rotating even when a foreign matter or the like has penetrated into the gap between the disk 100 and the ratchet disk 500.

1 and 2, the handle portion 400 includes a handle body 401 rotatably coupled to the main body 100, and a handle body 401 coupled to the handle body 401, And at least a part of which is engaged with the ratchet teeth of the pair of ratchet discs 500 according to the rotational direction of the handle body 401 with respect to the main body 100, (410).

The elastic binding piece 410 is movable along the longitudinal direction of the handle body 401 when the latch body 410 is rotated by the ratchet disk 500 when the handle body 401 is in contact with a plurality of inclined ratchet teeth. In the present invention, the end portion of the elastic fastening piece 410, which is provided so as to be able to be gripped by the operator by hand, can be easily bent by hand, More knobs are provided.

As will be described below, the left and right end regions of the elastic fastening piece 410 are coupled to the handle body 401 in a lateral direction, respectively. The elastic fastening piece 410 is elastically bonded to the handle body 401, So that when an external force is applied, unintentional shaking may occur in the left and right direction (direction intersecting with the elastic moving direction of the elastic fastening piece). For example, when the vehicle on which the cargo is mounted travels on a road in a bad condition for a long time, the coupling force between the handle body 401 and the elastic binding piece 410 weakens The handle body 401 and the elastic fastening piece 410 may be separated from each other.

The anti-shake structure is provided to further minimize the swaying of the elastic fastening piece 410 in the lateral direction so as to prevent the coupling force between the handle body 401 and the elastic fastening piece 410 from being reduced by an external force.

6, the anti-shake structure is configured to protrude from the left and right sides of the elastic binding piece 410 so as to restrict lateral movement of the elastic binding piece 410 by contacting the side surface of the handle body 401, A plurality of locking protrusions 411 may be provided. The pair of locking projections 411 are brought into contact with the left and right sides of the handle body 401 so that the handle body 401 and the elastic gripping piece 410 are engaged with each other, It is possible to minimize the swaying of the elastic fastening piece 410 in the left and right directions. Meanwhile, when the elastic fastening piece 410 is made of a metal material, the plurality of locking protrusions 411 may be formed through a drawing process, a caulking process, an embossing process, or the like.

As described above, when the handle body 401 rotates, the elastic fastening piece 410 is moved along the longitudinal direction of the handle body 401 in accordance with the variation of the contact position of the ratchet disk 500 with the plurality of inclined ratchet teeth. Sexually.

2 and 6, the elastic binding piece 410 is provided with a spring coupling protrusion 412 for coupling the elastic spring 413 to the handle body 401, and the elastic binding piece 410 The spring support bracket 420 is integrally coupled.

Specifically, the spring support bracket 420 is provided with a protrusion through hole 421 for selectively passing the end of the spring coupling protrusion 412 when the elastic catching piece 410 is moved, and the one end of the elastic spring 413 is supported . That is, one end of the elastic spring 413 is supported by the spring support bracket 420 and the other end is supported by the elastic binding piece 410, thereby enabling the elastic binding piece 410 to be elastically reciprocated.

In the present invention, the spring support bracket 420 may have a substantially U-shaped channel shape, and both ends of the spring support bracket 420 may be forcedly press-fitted into a coupling hole provided in the handle body 401 or fixedly coupled thereto through a separate nut .

1 and 2, the main body 100 is elastically movably coupled along the longitudinal direction with respect to the main body 100, and the main body 100 is rotatably supported on the main body 100 by rotation of the handle portion 400 relative to the main body 100, The body elastic resilient piece 600 is engaged so that at least a part of the ratchet disk 500 can be engaged or disengaged from the ratchet teeth of the pair of ratchet discs 500. [

Specifically, when the operator rotates the handle body 401 in one direction in order to tighten the sling belt 10 by winding the sling belt 10 on the belt winding unit 300, the elastic binding piece 410 is interlocked And rotates the belt take-up unit 300 in one direction while rotating the pair of ratchet discs 500 in one direction. At this time, the main body elastic binding piece 600 is also moved in one direction along the longitudinal direction of the main body 100 by the pair of ratchet discs 500 rotating. Here, the body elastic resilient piece 600 is resiliently moved and restored at an instant over any one of the ratchet teeth of the ratchet disk 500 in a rotating state.

The body elastic resilient piece 600 is provided with a spring engaging projection 612 for engaging the resilient spring 613. The body 100 is provided with an elastic resilient biasing member 600 for elastically reciprocating the body elastic resilient piece 600 Structure is provided.

Specifically, a protrusion through hole 102 is formed at one side of the main body 100 so that the end of the spring coupling protrusion 612 can be selectively passed through when the main body elastic binding piece 600 is moved, and one end of the elastic spring 613 is supported . That is, one end of the elastic spring 613 is supported on one side of the main body 100, and the other end is supported on the main elastic resilient piece 600 to allow elastic reciprocating movement of the main resilient resilient piece 600 .

The left and right end regions of the elastic binding piece 410 and the elastic body binding piece 600 are coupled to the handle body 401 and the main body 100 in the lateral direction, respectively, 410 and the main body elastic binding piece 600 are elastically and movably coupled to the handle body 401 and the main body 100, respectively, when the external force is applied to the handle body 401 and the main body 100, Shaking may occur in the direction of intersection). For example, when the vehicle on which the cargo is mounted travels on a road under a bad condition for a long time, the coupling force between the handle body 401 and the elastic binding piece 410, 100 and the main body elastic resilient piece 600 are weakened so that the handle body 401 and the main body 100 are separated from the elastic resilient piece 410 and the main body elastic resilient piece 600 do.

The present invention can additionally provide a separate structure in addition to the above-described anti-shake structure in order to further minimize lateral swinging of the elastic fastening piece 410 and the main body elastic fastening piece 600, do.

1 and 2, the handle body 401 is provided with a pair of slit holes 403 so as to allow both side end regions of the elastic binding pieces 410 to be inserted therethrough, respectively A guide groove 414 is provided so that a portion (an upper portion or a lower portion) of the inner side wall forming the pair of slit holes 403 can be inserted into both side end regions of the elastic binding piece 410 . Here, the guide groove 414 may be provided on the upper portion of the elastic fastening piece 410 and may be hooked on the upper portion of the inner wall, and may be provided on the lower portion of the elastic fastening piece 410, The guide groove 414 is provided on the upper side of the elastic fastening piece 410 for the sake of explanation and illustration.

The main body 100 is provided with a pair of slit holes 103 so that both side end regions of the main body elastic binding piece 600 can be inserted therethrough. A guide groove 614 is provided so that a part (an upper portion or a lower portion) of the inner side wall forming the slit hole 103 of the guide groove 614 can be inserted.

The present invention is characterized in that guide grooves 414 and 614 are provided in both side regions of the elastic binding piece 410 and the body elastic binding piece 600 and guide grooves 414 and 614 are formed in inner side walls forming the slit holes 403 and 103 The coupling force of the elastic binding piece 410 with respect to the handle body 401 and the binding force of the elastic body binding piece 600 with respect to the main body 100 can be increased by a certain amount or more.

In addition, the present invention further provides a structure capable of increasing the mutual coupling force in addition to the structure of the guide grooves 414 and 614 described above.

The elastic binding pieces 410 and the body elastic batts 600 are inserted into the slit holes 403 and 103 so that the elastic binding pieces 410 and the body elastic battens 600 are inserted into the slit holes 403 and 103, The thickness of the work 600 is smaller than a certain level. In this case, the fine movement of the elastic binding piece 410 and the body elastic binding piece 600 in the lateral direction can be limited by the above-described guide grooves 414 and 614, but the fine movement in the vertical direction crossing the above- It becomes difficult to do.

The present invention adopts a structure for further preventing fine movement of the elastic binding piece 410 and the main body elastic binding piece 600 in the vertical direction. Specifically, as shown in Fig. 7, a pair of slit holes Side end regions of the elastic fastening piece 410 inserted into the pair of slit holes 403 are formed in the inner side wall of the handle body 401 forming the side wall portions 403 in the upper side Or a plurality of pressing springs 404 for pressing in the downward direction.

For example, the handle body 401 is provided with a plurality of spring insertion grooves 405 so that a plurality of pressing springs 404 can be inserted therein, and the pressing spring 404 is inserted into the spring insertion grooves 405, The lower surface of the work 410 is pushed upward by a predetermined amount or more. The upper surface of both end portions of the elastic binding piece 410 moves to the upper side wall of the slit hole 403 as much as possible and the gap between the upper side wall of the slit hole 403 and the upper surface of the elastic binding piece 410 And the fine movement in the vertical direction can be restricted.

Likewise, both side end regions of the main elastic resilient piece 600 inserted into the pair of slit holes 103 are formed in the inner side wall of the main body 100 forming the pair of slit holes 103, A pressing spring 104 may be further provided to press the hole 103 upward or downward from the inside. The effects and the like to be implemented by this method are the same as those described above, and thus the description of the duplicate description will be omitted.

FIG. 8 is a front view showing a part of a belt tightening device according to another embodiment of the present invention, FIG. 9 is a front view showing a hook of a belt tightening device according to another embodiment of the present invention, Fig.

8 to 10, a belt fastening apparatus according to another embodiment of the present invention includes a hook 702 having a structure different from that of the above embodiment.

In other embodiments of the present invention, the locking hooks 702 are provided on both side walls of the truck so as to be spaced apart from each other So that it can be hooked on the latching rod 703.

Generally, the worker performs the work of fixing the loaded cargo with the hook 702 being hooked on the hook 703, wherein the belt 201 connected to the hook 702 (see Figs. 1 and 8 The hooking hook 702 can not keep the hooking hook 703 in the hooked state and it is inconvenient to separate the hooking hook 702 from the hooking hook 703. In this case, the worker has to re-engage the hook 702 with the hook 703 again.

Another embodiment of the present invention can solve the above-described inconvenience, so that the operator can more easily engage the hook 702 with the hook 703, and the hook structure can be efficiently retained .

Specifically, as shown in FIGS. 8 to 10, the hooking hook 702 has a substantially triangular shape, and a belt 201 is connected to one side thereof. The inside of the hooking hook 702 has a through-hole shape.

In another embodiment of the present invention, at least one spring member 704 is coupled to the inside of the latching hook 702. Hereinafter, the case where the spring members 704 are paired to each other for convenience of explanation will be described as a reference. Here, the spring member 704 is applicable as a leaf spring having a certain elasticity, and the pair of spring members 704 are preferably spaced apart from each other so that the latching rods 703 can pass through the space therebetween Do.

A spring member insertion groove 705 is provided in the locking hook 702 so that both ends of the pair of spring members 704 can be inserted and the operator inserts both end regions of the spring member 704 into the spring member insertion groove 705 So that the pair of spring members 704 can be engaged with the engagement hooks 702. However, in this simple coupling structure, when an external force acts on the spring member 704, there may arise a problem that the pair of spring members 704 are separated from the engagement hook 702. In another embodiment of the present invention, an auxiliary concave groove 706 is formed on both sides of the hook 702, specifically on both sides around the spring member insertion groove 705, as shown in Fig. Both ends of the spring member 704 inserted in the spring member insertion groove 705 are pressed and spread from both sides so that the both ends of the spring member 704 are partially bent toward the auxiliary concave groove 706, Can be prevented. In addition, by releasing both ends of the spring member 704 using a kind of rivet jointing method, it is possible to prevent disengagement of the hook 702 from the hook 702. [

Therefore, when the operator moves the hook 702 from one side (from the upper side to the lower side) so as to engage the hook 702 with the hook 703, the hook 703 is primarily engaged with the pair of the spring members 703, Passes through a front region of the spring member 704 and passes between a pair of spring members 704, at which time a resiliently compressed state of the pair of spring members 704 is obtained. The pair of spring members 704 are resiliently restored and the pair of spring members 704 are engaged with the pair of spring members 704. At this time, And is prevented from being detached from the latching hook 702. As shown in Fig.

That is, the latching rod 703 can be fixed to one side region (the lower side empty space inside the latching hook) of the latching hook 702 by the elastic force of the pair of spring members 704, 704) to the other side of the hook 702 (the upper empty space inside the hook in the figure).

11, the spring member 704 may be provided as a single piece, and one side of the latching hook 702 may be provided with a protrusion Area 730 may be provided. That is, in the structure described above, the latching rod 703 can be fixed to one side region (the lower side empty space inside the latching hook) of the latching hook 702 by the elastic force of one spring member 704, And can be moved to the other side area (the upper empty space inside the engaging hook in the drawing) within the engaging hook 702 by the elastic force of the spring member 704. In this structure, the number of the spring members 704 is reduced as compared with the above-described structure, so that the manufacturing cost can be reduced, and the productivity can be improved by increasing the assemblability.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: Sling belt 100: Body
104: pressure spring 200:
300: belt winding part 301:
302: concave groove 304: corrosion area
305: fine contact protrusion 400: handle portion
401: handle body 404: pressure spring
410: elastic fastening piece 411:
412: spring coupling projection 414: guide groove
420: spring support bracket 500: ratchet disk
520: protruding area 530: contact protrusion
600: Body elastic resilient piece 614: Guide groove
702: Retaining hook 703: Retaining rod
704: spring member 705: spring member insertion groove
706: auxiliary concave groove

Claims

A body fixing part provided on one side of the main body and capable of being fixed to a vehicle body; a belt winding part provided on the other side of the main body and capable of winding a sling belt; A belt tightening device comprising a handle portion capable of pulling a sling belt, and a pair of ratchet disks coupled to be rotatable at the same time as the belt take-up portion and having at least a part of engagement with the handle portion,
The vehicle body fixing portion
A latching hook provided on both sides of the vehicle body such that the latching hook can be engaged with any one of a plurality of latching rods spaced apart from each other; And
And at least one spring member coupled to the hook so as to prevent the hook from being detached from the hook when the hook is engaged with the hook,
Characterized in that the latching bar is fixed to one side region of the latching hook by the elastic force of the at least one spring member and is movable to the other side region of the latching hook by the elastic force of the at least one spring member. .

The method according to claim 1,
Wherein the at least one spring member is inserted into a spring member insertion groove provided in the engagement hook at both ends thereof and is made of a leaf spring.

3. The method of claim 2,
Wherein auxiliary grooves are provided on both side surfaces of the engaging hooks located around the spring member insertion grooves so that the bent portions of both end regions of the at least one spring member can be engaged.

The method according to claim 1,
Wherein one of the spring members is provided and a protruding region is provided on one side of the hook so as to face the one spring member.

The method according to claim 1,
And a corrosion area is provided on an outer surface of the pair of winding members that can be brought into contact with the sling belt.

The method according to claim 1,
Wherein a plurality of fine contact protrusions are provided on an outer surface of the pair of winding members so as to be in finely contact with the sling belt.

The method according to claim 1,
Wherein the pair of ratchet discs are coupled to both sides of the main body so as to be in contact with the main body, wherein insertion holes are formed in one side of each of the pair of ratchet discs, And protruding regions are provided on both sides of the main body which are respectively in contact with the pair of ratchet discs.

The method according to claim 1,
Wherein the pair of ratchet discs are coupled to both sides of the main body so as to be in contact with each other, wherein a plurality of contact protrusions are provided on one surface of each of the pair of ratchet discs, And a plurality of contact protrusions are provided on both sides of the main body, which are respectively in contact with the pair of ratchet discs so as to be spaced apart from each other.

The method according to claim 1,
Wherein,
A handle body rotatably coupled to the main body; And
At least a part of which is engaged or disengaged from the ratchet teeth of the pair of ratchet disks in accordance with the rotational direction of the handle body with respect to the main body, And an elastic fastening piece,
Wherein the elastic fastening piece is provided with a shake preventing structure for preventing the elastic fastening member from swinging with respect to the handle body,
And a plurality of locking protrusions provided on both sides of the elastic fixing member so as to restrict lateral movement of the elastic fixing member in contact with side surfaces of the handle body. .

10. The method of claim 9,
The elastic binding piece is provided with a spring coupling protrusion such that an elastic spring is engaged with the elastic coupling piece. The handle body is provided with a protrusion through hole for selectively passing the end of the spring coupling protrusion when the elastic binding piece is moved, Wherein a spring support bracket is provided as far as possible.

11. The method of claim 10,
Wherein the spring support bracket is formed in a channel shape.

10. The method of claim 9,
A pair of slit holes are formed in the handle body so that both side end regions of the elastic piece can be inserted therethrough, and a portion of the inner side wall forming the pair of slit holes is inserted into both side end regions of the elastic piece, Wherein the guide groove is formed in the guide groove.

13. The method of claim 12,
The inner side wall of the handle body forming the pair of slit holes is provided with a pair of slit holes for pressing both side end regions of the elastic fastening piece inserted inside the pair of slit holes upward or downward from the inside of the pair of slit holes Wherein a pressure spring is further provided for the belt.

The method according to claim 1,
The main body is elastically movably coupled to the main body along the longitudinal direction so that at least a part of the main body is rotatable about the main body when the main body is rotated with respect to the main body, The main elastic resilient piece is joined,
A pair of slit holes are formed in the main body so that both side end regions of the elastic resilient piece of the main body can be inserted therethrough, and a portion of the inner side walls forming the pair of slit holes are inserted Wherein a guide groove is provided to enable the belt to be tightened.

15. The method of claim 14,
The inner side wall of the body forming the pair of slit holes is provided with a pair of slit holes for pressing both side end regions of the body elastic resilient piece inserted in the inside of the pair of slit holes upward or downward from the inside of the pair of slit holes Wherein a pressure spring is further provided for the belt.

The method according to claim 1,
Wherein the belt winding portion includes a pair of winding pieces provided with concave grooves continuously along the longitudinal direction thereof,
Wherein the pair of ratchet discs are provided with insertion holes having a shape corresponding to the winding piece so that both ends of the pair of winding pieces can be inserted respectively.

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