Belt connector, attachment and connection body

Abstract

To provide a belt connector, an attachment and a connection body capable of reducing a load (impact load) applied to a worker by relaxing an impact generated by the vertical swing of a suspender such as a waist bag.SOLUTION: There is provided a belt connector to be used when a suspender 30, such as a tool holder or waist bag, is provided on a belt 20 worn on a worker's waist. The belt connector comprises: a belt attachment 1 to be attached to the belt 20; and a connection body 2 provided serially on a lower portion side of the belt attachment 1 and suspended with the suspender 30. The connection body 2 includes: an upper side portion 3; and a lower side portion 4 disposed below the upper side portion 3. The upper side portion 3 and the lower side portion 4 are serially connected to each other via connection means 5 each having an elastic member 7. The connection means 5 are configured such that the elastic members 7 operate along with downward movement of the lower side portion 4 to exhibit a cushioning function.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a belt connector, a harness and a connector. [Background technology]

[0002] Many workers engaged in electrical work, construction work, civil engineering work, and the like have a tool bag attached to a waist belt that they wear around their waist while working, and place various tools in this tool bag.

[0003] As shown in Patent Document 1, this waist bag has a belt loop fitting and is attached to the worker's waist belt via this belt loop fitting, while as shown in Patent Document 2, it is attached to the worker's waist belt via a connecting means that is provided separately from the waist bag. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3113277 [Patent Document 2] Utility Model Registration No. 3194444 Summary of the Invention [Problem to be solved by the invention]

[0005] Tool belts are often used to store heavy tools, such as hammers, pliers, nippers, and other manual tools, and impact drills, impact drivers, and other power tools. When in use, these tools become very heavy, and when a worker walks or runs while the tool belt is swinging up and down, the impact (shock load) caused by this swinging is also large. In the case of a tool belt attachment (wearing) structure as shown in Patent Documents 1 and 2 above, the large impact caused by the swinging of the tool belt, particularly the impact when the tool belt is moved downward (dropped), is transmitted directly to the worker's lower back, placing a large strain on the worker's lower back and causing lower back pain.

[0006] The present invention has been made in consideration of the above-mentioned current situation, and has an object to provide a belt connector, harness, and connector that can reduce the impact caused by the up and down swinging of a hanging device such as a waist bag, and reduce the load (shock load) on a worker. [Means for solving the problem]

[0007] The gist of the present invention will now be described with reference to the accompanying drawings.

[0008] This belt connector is used when attaching a hanging device 30 for a tool holder, a tool bag, or the like to a belt 20 worn around the waist of a worker, and comprises a belt wearing body 1 to be worn on the belt 20, and a connecting body 2 connected to the lower side of the belt wearing body 1 and from which the hanging device 30 is suspended, the connecting body 2 having an upper part 3 and a lower part 4 disposed below the upper part 3, the upper part 3 and the lower part 4 being connected via connecting means 5 having an elastic member 7, and the connecting means 5 is configured so that the elastic member 7 is activated as the lower part 4 moves downward, thereby providing a cushioning function.

[0009] Moreover, in the belt connector described in claim 1, the upper portion 3 has a lower surface portion 3a with two first insertion holes 8a at the bottom, and the lower portion 4 has an upper surface portion 4a with two second insertion holes 8b at the top that communicate with each of the first insertion holes 8a and that is disposed opposite the lower surface portion 3a, and the connecting means 5 relates to a belt connector characterized in that it has a rod-shaped connecting member 6 that is inserted into the first insertion holes 8a of the upper portion 3 and the second insertion hole 8b of the lower portion 4 in a connected state so as to be prevented from slipping out, connecting the upper portion 3 and the lower portion 4 so as to be freely movable toward and away from each other, and the elastic member 7 that is disposed on the outer periphery of this rod-shaped connecting member 6 and cushions the impact load transmitted from the lower portion 4 to the upper portion 3 due to contraction.

[0010] In addition, in the belt connector described in claim 2, at least one of the first insertion hole 8a and the second insertion hole 8b has a hole diameter d2 set to be larger than the outer diameter d1 of the rod-shaped connecting member 6, the rod-shaped connecting member 6 is inserted so as to be swingable, and the lower part 4 is connected to the upper part 3 so as to be freely movable toward and away from the upper part 3 and to be swingable.

[0011] The belt connector according to claim 2 is characterized in that the elastic member 7 is a coil spring.

[0012] The present invention relates to a belt connector as recited in claim 3, wherein the elastic member 7 is a coil spring.

[0013] The present invention also relates to a belt connector as described in any one of claims 1 to 5, characterized in that the belt connector has a plurality of the connecting means 5, and the plurality of connecting means 5 are arranged side by side in the width direction of the connector 2.

[0014] The present invention also relates to an equipment used when a worker carries a hanging device 30 such as a tool holder or a tool storage bag, the equipment comprising: a belt 20 wrapped around the waist of the worker; a shoulder strap 21 placed around the shoulder of the worker; and a connecting body 2 connecting the belt 20 and the shoulder strap 21, the connecting body 2 having an upper part 3 and a lower part 4 disposed below the upper part 3, the upper part 3 and the lower part 4 being connected via a connecting means 5 having an elastic member 7, and the connecting means 5 is configured so that the elastic member 7 is activated as the lower part 4 moves downward to provide a cushioning function.

[0015] Moreover, in the brace described in claim 7, the upper portion 3 has a lower surface portion 3a with two first insertion holes 8a formed at the lower portion, and the lower portion 4 has an upper surface portion 4a with two second insertion holes 8b formed at the upper portion and communicating with each of the first insertion holes 8a and arranged opposite the lower surface portion 3a, and the connecting means 5 relates to a brace characterized in that it has a rod-shaped connecting member 6 that is inserted into the first insertion hole 8a of the upper portion 3 and the second insertion hole 8b of the lower portion 4 in a connected state so as to be prevented from coming off, and connects the upper portion 3 and the lower portion 4 so as to be freely movable toward and away from each other, and the elastic member 7 that is arranged on the outer periphery of this rod-shaped connecting member 6 and cushions the impact load transmitted from the lower portion 4 to the upper portion 3 due to contraction.

[0016] In addition, in the brace described in claim 8, at least one of the first insertion hole 8a and the second insertion hole 8b has a hole diameter d2 set to be larger than the outer diameter d1 of the rod-shaped connecting member 6, the rod-shaped connecting member 6 is inserted so as to be swingable, and the lower part 4 is connected to the upper part 3 so as to be freely movable toward and away from the upper part 3 and to be swingable.

[0017] In addition, in the brace described in claim 8, the elastic member 7 is a coil spring.

[0018] In addition, in the brace described in claim 9, the elastic member 7 is a coil spring.

[0019] The brace according to any one of claims 7 to 11 is characterized in that it has a plurality of the connecting means 5, and the plurality of connecting means 5 are arranged side by side in the width direction of the connector 2.

[0020] Also, a connecting body that connects a belt 20 worn around the waist of a worker to an attachment provided on the belt 20, the connecting body 2 has an upper part 3, a lower part 4 and connecting means 5, the upper part 3 has an upper connecting part 10 at its upper part and a lower surface part 3a with two first insertion holes 8a at its lower part, the lower part 4 has a lower connecting part 14 at its lower part and an upper surface part 4a with two second insertion holes 8b at its upper part that communicate with the first insertion holes 8a, the lower part 4 is disposed below the upper part 3 and connected to the upper part 3 via the connecting means 5 so as to be movable toward and away from the upper part 3, the connecting means 5 being configured to connect the upper part 3 in a connected state. The connector includes a rod-shaped connecting member 6 that is inserted into the first insertion hole 8a and the second insertion hole 8b of the lower portion 4 without being dislodged, connecting the upper portion 3 and the lower portion 4 so that they can move toward and away from each other relative to each other, and an elastic member 7 that is arranged on the outer periphery of the rod-shaped connecting member 6 and cushions the impact load transmitted from the lower portion 4 to the upper portion 3 due to contraction, and at least one of the first insertion hole 8a and the second insertion hole 8b has a hole diameter d2 that is larger than the outer diameter d1 of the rod-shaped connecting member 6, through which the rod-shaped connecting member 6 is inserted so as to be swingable, and the lower portion 4 is connected to the upper portion 3 so that it can move toward and away from the upper portion 3 relative to each other and can swing freely. Effect of the Invention

[0021] Since the present invention is configured as described above, the impact load caused by the swinging of the suspension device when the worker walks or runs is mitigated, resulting in a belt connector, harness, and connector that reduce the load (impact load) on the worker. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a perspective view showing a first embodiment. [Diagram 2] FIG. 1 is an explanatory exploded perspective view showing a first embodiment. [Diagram 3] FIG. 2 is an explanatory cross-sectional front view showing the connector of the first embodiment. [Figure 4] FIG. 2 is an explanatory cross-sectional side view showing the connector of the first embodiment. [Diagram 5]FIG. 2 is a perspective view showing a state in which the first embodiment is used. [Figure 6] 5A to 5C are diagrams illustrating the operation of the connector in the use state of the first embodiment. [Figure 7] FIG. 11 is a perspective view showing another example of the usage state of the first embodiment. [Figure 8] FIG. 11 is an explanatory cross-sectional front view showing a connector in another example of the first embodiment. [Figure 9] FIG. 11 is a front view showing the second embodiment. [Figure 10] FIG. 11 is an explanatory exploded perspective view showing a connector of a second embodiment. [Figure 11] FIG. 11 is an explanatory cross-sectional front view showing a connector of Example 2. [Figure 12] FIG. 11 is an explanatory cross-sectional side view showing a connector of Example 2. [Figure 13] 10 is an explanatory view showing the relationship between the outer diameter of a rod-shaped connecting member and the hole diameter of a first insertion hole in the second embodiment. FIG. [Figure 14] 13A to 13C are diagrams illustrating the operation of the connector in the use state of the second embodiment. [Figure 15] 13A to 13C are diagrams illustrating the operation of the connector in the use state of the second embodiment. [Figure 16] FIG. 11 is an explanatory diagram showing a state in which the second embodiment is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] A preferred embodiment of the present invention will be briefly described below with reference to the drawings to illustrate the operation of the present invention.

[0024] When a worker walks or runs, suspending device 30 swings, and a load (impact load) generated when suspending device 30 moves downward (falls) during this swing is applied to the worker. However, according to the present invention, as suspending device 30 moves downward (falls), lower part 4 of connecting body 2 moves downward, and as lower part 4 moves downward, elastic member 7 provided on connecting means 5 is activated to cushion (absorb) the impact load generated by the downward movement (falling) of suspending device 30.

[0025] In other words, in the present invention, since the upper part 3 and the lower part 4 of the connecting body 2 are connected by a connecting means 5 having a cushioning function, the impact load generated by the swinging of the suspension device 30 arranged on the lower side of the connecting body 2 is cushioned (reduced) by the connecting body 2, and the impact load transmitted to the upper side of the connecting body 2 is reduced, thereby reducing the impact load on the worker. EXAMPLES

[0026] <Example 1> A specific embodiment 1 of the present invention will be described with reference to FIGS.

[0027] This embodiment is a belt connector used when attaching a hanging device 30 for a tool holder, a tool bag, or the like to a belt 20 worn around the waist of a worker, as shown in FIG. 5, and comprises a belt wearing body 1 worn on the belt 20, and a connecting body 2 connected to the lower side of the belt wearing body 1 and from which the hanging device 30 is suspended, the connecting body 2 having an upper part 3 and a lower part 4 disposed below the upper part 3, the upper part 3 and the lower part 4 being connected via connecting means 5 having an elastic member 7, and the connecting means 5 is configured so that the elastic member 7 is activated as the lower part 4 moves downward, thereby providing a cushioning function.

[0028] Each component of this embodiment will be described in detail below.

[0029] As shown in Figures 1 and 2, the belt attachment body 1 is formed in a rectangular flat plate shape and is composed of a base portion 1a having a plurality of belt holes 1c on its plate surface through which a belt 20 is inserted, and a pair of connecting portions 1b provided at the lower ends of the left and right side edges of the base portion 1a and connected to the connecting body 2.

[0030] Specifically, the base plate portion 1a and the connecting portion 1b are made of metal (specifically, aluminum or stainless steel) and are integrally formed.

[0031] In addition, the base plate portion 1a has four belt passage holes 1c formed as slits extending in the vertical direction, which are arranged in parallel at appropriate intervals in the width direction of the plate surface.

[0032] As shown in FIG. 2, the connecting portions 1b are formed in a plate shape and are provided facing the base portion 1a so as to protrude forward, and each of the connecting portions 1b has a through hole 9a formed in its plate surface.

[0033] In this embodiment, the number of belt holes 1c arranged side by side is four, but it may be two or three.

[0034] In addition, the connecting body 2 connected to the belt wearing body 1 is composed of an upper part 3 connected to the belt wearing body 1, a lower part 4 disposed below the upper part 3 and connected to the hanging device 30, and a connecting means 5 connecting the upper part 3 and the lower part 4, and is connected to the above-mentioned belt wearing body 1 so as to be freely rotatable.

[0035] Specifically, the upper portion 3 is made of the same metal (specifically, aluminum or stainless steel) as the belt attachment body 1, and as shown in Figures 2 and 3, is formed in a roughly U-shape when viewed from the front with an open upper side, with a pair of opposing wall portions 3b erected on both the left and right ends of the horizontal lower surface portion 3a.

[0036] More specifically, the upper portion 3 is an integrally molded member in which a single plate-like member formed in a predetermined shape is bent by press working or the like to integrally form the lower surface portion 3a and the wall surface portion 3b.

[0037] 2 and 4, guide plate portions 11 are vertically provided on the front (front side) edge and the rear (back side) edge of the lower surface portion 3a, respectively, and these guide plate portions 11 are configured to suppress wobble (displacement) in the front-to-rear direction of the lower surface portion 4 when the lower surface portion 4 described later moves downward, and to guide the downward movement of the lower surface portion 4 straight downward. Note that these guide plate portions 11 are also formed integrally with the lower surface portion 3a and the wall surface portion 3b.

[0038] Furthermore, a positioning portion 12 for positioning the elastic member 7 of the connecting means 5 is provided on the lower surface portion 3a.

[0039] Specifically, as shown in Figures 2 and 3, the positioning portion 12 is configured as an annular convex portion (burring) formed along the peripheral portion of each first insertion hole 8a provided in the underside portion 3a, and is provided on the upper surface side of the underside portion 3a, so that the elastic member 7 (coil spring) of the connecting means 5 is positioned on and engaged with the first insertion hole 8a.

[0040] 3, the left and right wall portions 3b are each formed in a gentle crank shape with the upper side located slightly inside the lower side, and the upper side located inside is provided with a through hole 9b that matches with the through hole 9a provided in the connecting portion 1b of the belt wearing body 1 to form a communication hole. Note that the shape of the wall portions 3b is not limited to the crank shape described above, and may be, for example, a straight shape.

[0041] Similarly to upper portion 3, lower portion 4 is made of metal (specifically, aluminum or stainless steel), and as shown in FIGS. 2 and 3, is formed in a generally U-shape when viewed from the front with an open lower side, having a pair of opposing wall portions 4b vertically extending from both left and right ends of horizontal upper portion 4a, and a lower connecting portion 14 for suspending hanging tool 30 is provided at the bottom.

[0042] Specifically, like the upper portion 3, the lower portion 4 is an integrally molded member in which a single plate-shaped member formed in a predetermined shape is bent by press processing or the like to integrally form the top surface portion 4a and the wall portion 4b.

[0043] This upper surface portion 4a has a second insertion hole 8b arranged in parallel in the longitudinal direction (width direction of the lower portion 4) that matches with the first insertion hole 8a provided in the lower surface portion 3a of the upper portion 3 to form a communicating hole.

[0044] In addition, left and right wall surface portions 4b are each provided with an insertion hole 13, and a bolt 14a is disposed through this insertion hole 13 in a non-removable state by a nut 14b so as to be freely inserted and removed, and is configured as lower connecting portion 14 for suspending suspension tool 30.

[0045] The connecting means 5 is configured to include a rod-shaped connecting member 6 that is inserted through the first insertion hole 8a of the upper part 3 and the second insertion hole 8b of the lower part 4 in a connected state and connects the upper part 3 and the lower part 4 so as to be able to move toward and away from each other, and an elastic member 7 that is disposed on the outer periphery of the rod-shaped connecting member 6 and cushions the impact load transmitted from the lower part 4 to the upper part 3 due to contraction.

[0046] Specifically, as shown in Figures 2 and 3, the connecting member 6 is inserted into a communicating hole (first insertion hole 8a and second insertion hole 8b in a communicating state) formed by matching a first insertion hole 8a provided in the lower surface portion 3a of the upper portion 3 with a second insertion hole 8b provided in the upper surface portion 4a of the lower portion 4, and connects the lower portion 4 to the upper portion 3 so that they can be freely attached and detached (free to move up and down), a stopper member 15 that prevents the rod-shaped connecting member 6 from coming off the communicating hole (prevents it from coming off), an elastic member 7 that is fitted (covered) on the rod-shaped connecting member 6 and absorbs and reduces the impact caused by the up and down swinging (up and down swinging) of the hanging device 30 by contracting, and a retaining member 16 that maintains the state in which the elastic member 7 is fitted (covered) on the rod-shaped connecting member 6.

[0047] More specifically, in this embodiment, as shown in the figure, the components of the connecting means 5 include a bolt as the rod-shaped connecting member 6 (hereinafter, the rod-shaped connecting member 6 will be referred to as the bolt 6), a coil spring as the elastic member 7 (hereinafter, the elastic member 7 will be referred to as the coil spring 7), and a nut screwed onto the bolt 6 as the anti-pullout member 15 (hereinafter, the anti-pullout member 15 will be referred to as the nut 15). The coil spring 7 is positioned upright on the communicating hole, specifically on the first insertion hole 8a, by a positioning portion 12 provided on the underside 3a of the upper part 3, and a retaining member 16 that holds (holds) the coil spring 7 is fitted over the upper end. The bolt 6 has a cylindrical cover 17 provided on its shaft and is arranged to pass through the first insertion hole 8a, the second insertion hole 8b, the coil spring 7, and the retaining member 16, and a nut 15 is screwed onto the tip to prevent it from coming out.

[0048] The elastic member 7 is not limited to the coil spring 7, but may be any suitable member such as rubber or a leaf spring that has elasticity and can provide the effects of this embodiment described below.

[0049] Furthermore, in the connecting body 2 of this embodiment, in the normal state (when no load is applied to the lower portion 4), the lower portion 4 is biased toward the upper portion 3 by the extension bias of the coil spring 7 of the connecting means 5, and the lower surface portion 3a of the upper portion 3 and the upper surface portion 4a of the lower portion 4 are in contact with each other to form an integrated state.

[0050] In addition, the bolt 6 is provided with a female thread portion 6a within an appropriate range (in this embodiment, it is a fully threaded bolt) and is configured so that the screwed position of the nut 15 can be adjusted. The connecting means 5 is configured so that by adjusting the screwed position of this nut 15, the contraction state of the coil spring 7 can be changed, thereby adjusting the degree of shock absorption (cushioning) effect of the coil spring 7.

[0051] This embodiment is provided with two of the above-mentioned connecting means 5, and as shown in Figures 1 and 3, the upper portion 3 and the lower portion 4 are connected by the two connecting means 5 arranged side by side in the width direction of the connecting body 2.

[0052] In addition, the upper connecting part 10, which connects the belt wearing body 1 and the connecting body 2 so as to be freely rotatable, is composed of a bolt 10a and a nut 10b, as shown in Figures 2 and 3, and a fully threaded bolt is used for the bolt 10a, with the female thread portion being covered by a pipe 18.

[0053] The connecting structure between the belt attachment body 1 and the connecting body 2 is not limited to the configuration shown in this embodiment, and any configuration can be adopted as long as the belt attachment body 1 and the connecting body 2 can be connected to each other so as to be freely rotatable.

[0054] In this embodiment, the coil spring 7 of the connecting means 5 is provided on the upper portion 3, but the connecting means 5 may be provided on the lower portion 4 as shown in Fig. 8. In this case, the positioning portion 12 is provided on the lower surface side of the second insertion hole 8b provided on the upper surface portion 4a of the lower portion 4.

[0055] In this embodiment, at least one of the first through-hole 8a and the second through-hole 8b is set to have a hole diameter d2 larger than the outer diameter d1 of the rod-shaped connecting member 6, so that the rod-shaped connecting member 6 is inserted so as to be swingable, and the lower part 4 is connected to the upper part 3 so as to be relatively movable toward and away from the upper part 3 and to be swingable. In this case, it is preferable to not provide the positioning part 12 or to not provide an annular convex part (burring), which allows the rod-shaped connecting member 6 to swing smoothly.

[0056] The effects of the present embodiment configured as above will be described below.

[0057] FIG. 5 shows a state in which suspending tool 30 (waist bag) is attached using this embodiment.

[0058] As shown in FIG. 5, in this embodiment, connecting body 2 from which suspending device 30 is suspended is composed of upper part 3 connected to belt wearing body 1, and lower part 4 from which suspending device 30 is suspended, and upper part 3 and lower part 4 are connected via connecting means 5 having coil spring 7, so that, as shown in FIG. 6, lower part 4 moves downward as the suspending device 30 moves downward (falls) due to the up and down swinging caused by the worker walking or running, and this downward movement of lower part 4 contracts coil spring 7 of connecting means 5, cushioning (alleviating the impact) the impact load caused by the falling movement of suspending device 30, thereby reducing the impact load transmitted to upper part 3 located on the upper side (belt 20 side) of connecting means 5 and belt wearing body 1 connected to this upper part 3, thereby reducing the impact load on the worker's waist.

[0059] Although FIG. 5 shows a case where two of this embodiment are used in parallel, it goes without saying that this embodiment can also be used as a single unit.

[0060] Furthermore, in this embodiment, upper connecting portion 10 connecting belt wearing body 1 and connecting body 2 is composed of nut 10b and nut 10b, and belt wearing body 1 and connecting body 2 are connected to be freely rotatable (relatively) around bolt 10a as an axis. Therefore, belt wearing body 1 is connected to belt 20 in a vertical and inside-out state, and by rotating connecting body 2 downward from this state, connecting body 2 can be made to be inclined with respect to the worker, as shown in FIG. 7. By suspending suspending device 30 from connecting body 2 in this inclined state, suspending device 30 can be attached in a state farther away from the body of the worker than in the state shown in FIG. 5, and suspending device 30 is less likely to interfere with the worker. This allows the worker to concentrate on the work without worrying about suspending device 30 coming into contact with his or her body, improving workability.

[0061] <Example 2> A specific embodiment 2 of the present invention will be described with reference to FIGS.

[0062] This embodiment is an attachment used when a worker carries a hanging device 30 such as a tool holder or a tool storage bag, as shown in FIG. 16, and comprises a belt 20 wrapped around the waist of the worker, a shoulder strap 21 hung around the shoulder of the worker, and a connecting body 2 connecting the belt 20 and the shoulder strap 21, the connecting body 2 having an upper part 3 and a lower part 4 disposed below the upper part 3, the upper part 3 and the lower part 4 being connected via a connecting means 5 having an elastic member 7, and the connecting means 5 is configured such that the elastic member 7 is activated as the lower part 4 moves downward, thereby providing a cushioning function.

[0063] Each component of this embodiment will be described in detail below.

[0064] As shown in FIG. 9, the belt 20 is composed of a waist belt portion 22 that is wrapped around the waist of the worker, and a waist support portion 23 that is disposed inside the waist belt portion 22 and protects the waist of the worker.

[0065] Specifically, the waist belt portion 22 is formed in a flat belt shape having a length that allows it to be wrapped around the worker's waist (around the hips), and is provided with a fastener 24a at one end and a fastener 24b at the other end, and is configured to be able to be tightened by connecting this fastener 24a and the fastener 24b.

[0066] The waist support portion 23 is formed in a flat belt shape that is wider than the waist belt portion 22, and is configured in a shape that can cover at least the back side and both sides of the waist of the worker.

[0067] Specifically, the waist support portion 23 has a plurality of belt loops 25 at appropriate intervals on the front side for inserting and detaching the waist belt portion 22, and also has a cushion portion (not shown) on the back side.

[0068] The waist support portion 23 is provided with a plurality of attachment portions 26 on the upper side thereof to which the connector 2 is attached.

[0069] Specifically, the attachment part 26 is formed in a cylindrical shape along the upper side, and is provided at three locations, namely, the central part in the longitudinal direction of the waist support part 23 and both the left and right ends, as shown in Fig. 9. Note that the configuration of the attachment part 26 is not limited to a cylindrical shape, and any configuration that allows the connector 2 to be attached can be appropriately adopted.

[0070] As shown in FIG. 9, the shoulder strap 21 is made up of a pair of left and right shoulder strap parts 27, a back-side hanging strap part 28, and a backrest connecting part 29 that connects these parts.

[0071] The base end of each shoulder strap portion 27 and the back suspension strap portion 28 is connected to the backrest connection portion 29, and the tip end is configured to be able to attach the connector 2 (in this embodiment, tubular portions 27a, 28a are formed in the same manner as the attachment portion 26 provided on the lumbar support portion 23).

[0072] In addition, the connecting body 2 connecting the belt 20 and the shoulder strap 21 is composed of an upper part 3 connected to the shoulder strap 21, specifically, the shoulder strap portion 27 and the back hanging strap portion 28 of the shoulder strap 21, a lower part 4 disposed below the upper part 3 and connected to the belt 20, and a connecting means 5 connecting the upper part 3 and the lower part 4.

[0073] Specifically, the upper portion 3 is made of metal (specifically, aluminum or stainless steel) and, as shown in Figures 10 and 11, is formed in a roughly U-shape when viewed from the front with an open upper side, having a pair of opposing wall portions 3b erected on both the left and right ends of a horizontal lower portion 3a.

[0074] Specifically, the upper portion 3 is an integrally molded member in which a single plate-like member formed in a predetermined shape is bent by press working or the like to integrally form the lower surface portion 3a and the wall surface portion 3b.

[0075] Further, in the lower surface portion 3a, two first through holes 8a are arranged side by side in the longitudinal direction (width direction of the upper portion 3), and further, as shown in Figs. 10 and 12, guide plate portions 11 are vertically provided on the front (front side) edge and the rear (back side) edge of the lower surface portion 3a, respectively, and these guide plate portions 11 are configured to suppress wobbling (displacement) in the front-to-rear direction of the lower portion 4 when the lower portion 4 described later moves downward, and to guide the downward movement of the lower portion 4 straight downward. Note that these guide plate portions 11 are also formed integrally with the lower surface portion 3a and the wall surface portion 3b.

[0076] As shown in FIG. 13, the first insertion hole 8a has a hole diameter d2 set to be larger than the outer diameter d1 of the rod-shaped connecting member 6, so that the rod-shaped connecting member 6 is inserted therethrough in a swingable manner and the lower part 4 is connected to the upper part 3 in a manner that allows relative movement toward and away from the upper part 3 and allows the lower part 4 to swing freely.

[0077] Specifically, the hole diameter of the first insertion hole 8a is set to 1.2 to 1.4 times the outer diameter of the rod-shaped connecting member 6 (specifically, the outer diameter of the tubular cover 17 fitted onto the shaft portion of the rod-shaped connecting member 6) (in this embodiment, the hole diameter of the first insertion hole 8a: φ8.5 mm, the outer diameter of the rod-shaped connecting member 6 (tubular cover 17): φ6.5 mm).

[0078] In addition, instead of the first through hole 8a, the hole diameter of the second through hole 8b may be set to a diameter larger than the outer diameter d1 of the rod-shaped connecting member 6, and the hole diameters of both the first through hole 8a and the second through hole 8b may be set to a diameter larger than the outer diameter d1 of the rod-shaped connecting member 6.

[0079] As shown in FIG. 11, each of the left and right wall portions 3b is formed in a gentle crank shape with the upper side positioned slightly inward from the lower side, and an upper connecting portion 10 is provided on the upper side.

[0080] Specifically, as shown in Fig. 10, the upper connecting part 10 is composed of a bolt 10a and a nut 10b, and is arranged so as to be freely inserted and detached into a through hole 9 formed in the upper part of the wall part 3b. Note that the shape of the wall part 3b is not limited to the crank shape described above, and may be, for example, a straight shape.

[0081] Similarly to upper portion 3, lower portion 4 is made of metal (specifically, aluminum or stainless steel), and as shown in FIGS. 10 and 11, is formed in a generally U-shape when viewed from the front with an open lower side, having a pair of opposing wall portions 4b vertically extending from both left and right ends of horizontal upper portion 4a, and a lower connecting portion 14 for suspending hanging tool 30 is provided at the lower portion.

[0082] Specifically, like the upper portion 3, the lower portion 4 is an integrally molded member in which a single plate-shaped member formed in a predetermined shape is bent by press processing or the like to integrally form the top surface portion 4a and the wall portion 4b.

[0083] This upper surface portion 4a has a second insertion hole 8b arranged in parallel in the longitudinal direction (width direction of the lower portion 4) that mates with a first insertion hole 8a provided in the lower surface portion 3a of the upper portion 3 to form a communicating hole 8.

[0084] In addition, left and right wall surface portions 4b are each provided with an insertion hole 13, and a bolt 14a is disposed through this insertion hole 13 in a non-removable state by a nut 14b so as to be freely inserted and removed, and is configured as lower connecting portion 14 for suspending suspension tool 30.

[0085] The connecting means 5 is configured to include a rod-shaped connecting member 6 that is inserted through the first insertion hole 8a of the upper part 3 and the second insertion hole 8b of the lower part 4 in a connected state and connects the upper part 3 and the lower part 4 so as to be able to move toward and away from each other, and an elastic member 7 that is disposed on the outer periphery of the rod-shaped connecting member 6 and cushions the impact load transmitted from the lower part 4 to the upper part 3 due to contraction.

[0086] Specifically, as shown in Figures 10 and 11, the connecting member 6 is inserted into a communicating hole (first insertion hole 8a and second insertion hole 8b in a communicating state) formed by matching a first insertion hole 8a provided in the lower surface portion 3a of the upper portion 3 with a second insertion hole 8b provided in the upper surface portion 4a of the lower portion 4, and connects the lower portion 4 to the upper portion 3 so that they can be freely attached and detached (free to move up and down), a stopper member 15 that prevents the rod-shaped connecting member 6 from coming off the communicating hole (prevents it from coming off), an elastic member 7 that is fitted (covered) on the rod-shaped connecting member 6 and absorbs and reduces the impact caused by the up and down swinging (up and down swinging) of the hanging device 30 by contracting, and a retaining member 16 that maintains the state in which the elastic member 7 is fitted (covered) on the rod-shaped connecting member 6.

[0087] More specifically, in this embodiment, as shown in the figure, the components of the connecting means 5 include a bolt as the rod-shaped connecting member 6 (hereinafter, the rod-shaped connecting member 6 will be referred to as the bolt 6), a coil spring as the elastic member 7 (hereinafter, the elastic member 7 will be referred to as the coil spring 7), and a nut screwed onto the bolt 6 as the anti-pullout member 15 (hereinafter, the anti-pullout member 15 will be referred to as the nut 15). The coil spring 7 is positioned upright on the communicating hole, specifically on the first insertion hole 8a, by a positioning portion 12 provided on the underside 3a of the upper part 3, and a retaining member 16 that holds (holds) the coil spring 7 is fitted over the upper end. The bolt 6 has a cylindrical cover 17 provided on its shaft and is arranged to pass through the first insertion hole 8a, the second insertion hole 8b, the coil spring 7, and the retaining member 16, and a nut 15 is screwed onto the tip to prevent it from coming out.

[0088] The elastic member 7 is not limited to the coil spring 7, but may be any suitable member such as rubber or a leaf spring that has elasticity and can provide the effects of this embodiment described below.

[0089] Furthermore, in the connecting body 2 of this embodiment, in the normal state (when no load is applied to the lower portion 4), the lower portion 4 is biased toward the upper portion 3 by the extension bias of the coil spring 7 of the connecting means 5, and the lower surface portion 3a of the upper portion 3 and the upper surface portion 4a of the lower portion 4 are in contact with each other to form an integrated state.

[0090] In addition, the bolt 6 is provided with a female thread portion 6a within an appropriate range (in this embodiment, it is a fully threaded bolt) and is configured so that the screwed position of the nut 15 can be adjusted. The connecting means 5 is configured so that by adjusting the screwed position of this nut 15, the contraction state of the coil spring 7 can be changed, thereby adjusting the degree of shock absorption (cushioning) effect of the coil spring 7.

[0091] This embodiment is provided with two of the above-mentioned connecting means 5, and as shown in Figure 11, the upper portion 3 and the lower portion 4 are connected by the two connecting means 5 arranged side by side in the width direction of the connecting body 2.

[0092] The effects of the present embodiment configured as above will be described below.

[0093] FIG. 16 shows a state in which a hanging device 30 (waist bag) is attached to this embodiment using the belt connector of Example 1.

[0094] As shown in FIG. 16, in this embodiment, belt 20 from which suspending device 30 is suspended is connected to shoulder strap 21 via connector 2, and connector 2 is composed of upper part 3 connected to shoulder strap 21 and lower part 4 connected to belt 20 from which suspending device 30 is suspended, and upper part 3 and lower part 4 are connected via connecting means 5 having coil spring 7, so that, as shown in FIG. 14, the up and down swinging of suspending device 30 caused by a worker walking or running is prevented. As the hanging device 30 moves downward (dropping), the lower part 4 moves downward, and this downward movement of the lower part 4 causes the coil spring 7 of the connecting means 5 to contract, which buffers (mitigates the impact) the impact load caused by the drop of the hanging device 30 and reduces the impact load transmitted to the upper part 3 located above the connecting means 5 (belt 20 side) and the shoulder strap 21 connected to this upper part 3, thereby reducing the impact load (digging into) the shoulder strap 21 on the worker's shoulder.

[0095] Furthermore, in this embodiment, since the hole diameter d2 of the first insertion hole 8a provided in the upper part 3 of the connecting body 2 is set to be larger than the outer diameter d1 of the bolt 6, as shown in FIG. 15 , the bolt 6 is inserted in a swingable manner, and the lower part 4 is connected to the upper part 3 so as to be able to move toward and away from the upper part 3 relatively and to be able to swing freely, so that the connecting body 2 operates more flexibly, and the impact load generated by the swing of the hanging device 30 can be cushioned (mitigated) as much as possible, resulting in a highly practical device.

[0096] The present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate.

[0097] Note that claim 13 is a claim that specifies the connector 2 of Examples 1 and 2. Therefore, the hanging device 30 of Example 1 and the shoulder strap 21 of Example 2 are included in the "object to be attached" of claim 13, but the "object to be attached" is not limited to these, as a matter of course. [Explanation of symbols]

[0098] d1 Outer diameter d2 pore diameter 1 Belt attachment 2 Concatenation 3 Upper part 3a Bottom part 4 Lower part 4a Top part 5 Connection means 6 Rod-shaped connecting member 7 Elastic member 8a First insertion hole 8b Second insertion hole 10 Upper connection part 14 Lower connection part 20 Belt 21 Shoulder bag 30 Hanging equipment

Claims

1. 1. A belt connector used when attaching a hanging device such as a tool holder or a waist bag to a belt worn around a worker's waist, the belt connector comprising: a belt attachment body to be attached to the belt; and a connecting body connected to the lower side of the belt attachment body and from which the hanging device is suspended, the connecting body having an upper part and a lower part disposed below the upper part, the upper part and the lower part being connected via a connecting means having an elastic member, and the connecting means is configured so that the elastic member is activated as the lower part moves downward to provide a cushioning function.

2. 2. The belt connector according to claim 1, wherein the upper portion has a lower surface portion with two first insertion holes at a lower portion, and the lower portion has an upper surface portion with two second insertion holes at an upper portion that communicate with each of the first insertion holes and is disposed opposite the lower surface portion, and the connecting means is configured to include a rod-shaped connecting member that is inserted through the first insertion holes of the upper portion and the second insertion hole of the lower portion in a connected state so as to be prevented from slipping out, connecting the upper portion and the lower portion so as to be freely movable toward and away from each other, and the elastic member that is disposed on the outer periphery of the rod-shaped connecting member and cushions impact loads that are transmitted from the lower portion to the upper portion due to contraction.

3. 3. The belt connector according to claim 2, wherein at least one of the first insertion hole and the second insertion hole has a hole diameter set to be larger than an outer diameter of the rod-shaped connecting member, the rod-shaped connecting member is inserted therethrough in a swingable manner, and the lower portion is connected to the upper portion so as to be freely movable toward and away from the upper portion and to be freely swingable.

4. 3. The belt connector according to claim 2, wherein the elastic member is a coil spring.

5. 4. The belt connector according to claim 3, wherein the elastic member is a coil spring.

6. 6. The belt connector according to claim 1, further comprising a plurality of said connecting means, said plurality of connecting means being arranged in parallel in a width direction of said connector.

7. An equipment used when a worker carries a hanging device such as a tool holder or a tool storage bag, the equipment comprising: a belt that is wrapped around the worker's waist; a shoulder strap that is slung around the worker's shoulders; and a connecting body that connects the belt and the shoulder strap, the connecting body having an upper part and a lower part disposed below the upper part, the upper part and the lower part being connected via a connecting means having an elastic member, the connecting means being configured such that the elastic member is activated as the lower part moves downward to provide a cushioning function.

8. 8. The brace according to claim 7, wherein the upper portion has a lower surface portion with two first insertion holes formed at a lower portion, and the lower portion has an upper surface portion with two second insertion holes formed at an upper portion communicating with each of the first insertion holes and disposed opposite the lower surface portion, and the connecting means is configured to include a rod-shaped connecting member that is inserted through the first insertion hole of the upper portion and the second insertion hole of the lower portion in a connected state so as to be prevented from slipping out, connecting the upper portion and the lower portion so as to be freely movable toward and away from each other, and the elastic member that is disposed on the outer periphery of the rod-shaped connecting member and cushions impact loads transmitted from the lower portion to the upper portion due to contraction.

9. In the brace described in claim 8, at least one of the first insertion hole and the second insertion hole has a hole diameter set to be larger than an outer diameter of the rod-shaped connecting member, the rod-shaped connecting member is inserted so as to be swingable, and the lower portion is connected to the upper portion so as to be freely movable toward and away from the upper portion and to be swingable relative to the upper portion.

10. 9. The brace according to claim 8, wherein the elastic member is a coil spring.

11. 10. The brace according to claim 9, wherein the elastic member is a coil spring.

12. 12. The brace according to claim 7, further comprising a plurality of said connecting means, said plurality of connecting means being arranged in parallel in a width direction of said connector.

13. A connector that connects a belt worn on a worker's waist to an attachment provided on the belt, the connector having an upper part, a lower part and a connecting means, the upper part having an upper connecting part at an upper part and a lower surface part with two first insertion holes at a lower part, the lower part having a lower connecting part at a lower part and a top surface part with two second insertion holes at an upper part communicating with the first insertion holes, the connector being disposed below the upper part and connected to the upper part via the connecting means so as to be movable toward and away from the upper part, the connecting means being configured to connect the upper part in a communicating state to the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of the upper ... lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of the upper part of the lower part of the lower part of the lower part of the lower part of the lower part of the lower part of a rod-shaped connecting member that is inserted through the first insertion hole and the second insertion hole of the lower portion so as to be prevented from slipping out, connecting the upper portion and the lower portion so as to be able to move toward and away from each other relative to each other, and an elastic member that is arranged on the outer periphery of the rod-shaped connecting member and that cushions impact loads that are transmitted from the lower portion to the upper portion due to contraction, wherein at least one of the first insertion hole and the second insertion hole has a hole diameter set to be larger than the outer diameter of the rod-shaped connecting member, through which the rod-shaped connecting member is inserted so as to be able to swing, and the lower portion is connected to the upper portion so as to be able to move toward and away from each other relative to each other and to be able to swing.

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