Battery tray and work machine equipped with it

Abstract

The present invention fixes a battery easily and firmly.　A battery stand (50) is provided with: a placement table (54); a restricting member (55) that is disposed on the rear surface side of a battery (BT) and restricts the backward movement of the battery (BT); and a fixing member (53) that is disposed over the front surface of the battery (BT) from above or the upper part of the restricting member (55) and fixes the battery (BT). The fixing member (53) has: a first fixing tool (53a) disposed on the upper surface side of the battery (BT); a second fixing tool (53b) disposed on the front surface side of the battery (BT); and a connecting section (90) for connecting the first fixing tool (53a) and the second fixing tool (53b). The connecting section (90) is provided with: an inclined section (63) provided on one of the first fixing tool (53a) and the second fixing tool (53b) and inclined in a direction approaching the rear surface side of the battery (BT) as the section goes upward; and a holding member (52) for holding the other connecting position of the first fixing tool (53a) and the second fixing tool (53b) with respect to the inclined section (63) so as to be adjustable.

Description

Technical Field

[0001] The present invention relates to a battery mount for fixing a battery to a work machine and a work machine including the same.

Background Art

[0002] The battery mount disclosed in Patent Literature 1 includes a mounting wall on which a first battery and a second battery having different mounting forms can be selectively placed, and a regulating member provided on the mounting wall for regulating the forward movement of the first battery and the second battery. The regulating member has a regulating portion that engages with a first engaging protrusion provided at the lower front of the second battery to regulate the upward movement of the second battery.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The battery mount of Patent Literature 1 can attach batteries having different mounting forms.

[0005] However, in the battery mount of Patent Literature 1, a pair of rod members (a first rod member and a second rod member) and a mounting stay are used to fix the battery to the battery mount. Therefore, when attaching or detaching the battery to / from the battery mount, it is necessary to attach and detach the pair of rod members.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a battery mount that can firmly and easily fix a battery and a work machine including the same.

Means for Solving the Problems

[0007] The technical means employed by the present invention to solve the above problems are characterized by the following points.

[0008] A battery stand according to one aspect of the present invention comprises a mounting base on which a battery is placed, a restricting member disposed on the rear side of the battery and restricting the rearward movement of the battery, and a fixing member disposed from above or above the restricting member across the front of the battery and fixing the battery, wherein the fixing member has a first fixing device disposed on the upper side of the battery, a second fixing device disposed on the front side of the battery, and a connecting portion connecting the first fixing device and the second fixing device, the connecting portion being provided on one of the first fixing device and the second fixing device and inclined in a direction that moves toward the rear side of the battery as it moves upward, and a holding member that adjustably holds the connecting position of the other of the first fixing device and the second fixing device with respect to the inclined portion The first fixing device has one end connected to the upper or upper part of the restricting member and the other end positioned above the front of the battery, the second fixing device has the inclined portion of the connecting part formed at one end and the other end connected to the mounting base described above, the second fixing device is bent in the middle and the portion from the middle to the one end forms the inclined portion that extends in the direction of the inclination. A battery stand according to one aspect of the present invention comprises a mounting base on which a battery is placed, a restricting member disposed on the rear side of the battery and restricting the rearward movement of the battery, and a fixing member disposed from above or above the restricting member across the front of the battery and fixing the battery, wherein the fixing member has a first fixing device disposed on the upper side of the battery, a second fixing device disposed on the front side of the battery, and a connecting portion connecting the first fixing device and the second fixing device, the connecting portion being provided on one of the first fixing device and the second fixing device and increasing in size towards the top The device comprises an inclined portion that slopes toward the rear side of the battery, and a holding member that adjustably holds the connection position of the other of the first and second fasteners relative to the inclined portion. The holding member moves along the inclined portion to change the connection position of the other of the first and second fasteners relative to the inclined portion. The other of the first and second fasteners has an inclined surface formed thereon that slopes in a direction intersecting the inclination direction, and the holding member contacts the inclined surface to hold the connection position of the other of the first and second fasteners relative to the inclined portion.

[0009] The first fixing device may have one end connected to the upper or upper part of the regulating member and the other end positioned above the front of the battery, and the second fixing device may have the inclined portion of the connecting part formed at one end and the other end connected to the mounting base described above.

[0010] The second fixing device may be bent in the middle and form an inclined portion that extends in the direction of inclination from the middle to the one end.

[0011] The restricting member extends from the aforementioned mounting base above the battery, one end of the first fixing device is connected to the upper part of the restricting member so as to be able to swing vertically, and the other end of the second fixing device may be connected to the aforementioned mounting base so as to be able to swing in the front-to-back direction of the battery.

[0012] The holding member may move along the inclined portion to change the connection position of the other of the first and second fasteners relative to the inclined portion.

[0013] The other of the first and second fasteners is formed with an inclined surface that is inclined in a direction intersecting the inclination direction, and the holding member may maintain the connection position of the other of the first and second fasteners with respect to the inclined portion by contacting the inclined surface.

[0014] The inclined portion has a screw groove, and the retaining member may be a fastening member that screws into the screw groove.

[0015] The fixing member may be located on the inside in the width direction of the battery placed on the aforementioned mounting base.

[0016] The aforementioned fixing member may be provided on the inside in the width direction of the battery placed on the aforementioned mounting base.

[0017] The battery is provided with clamp members positioned between the top surface of the battery and the first fixing device, and between the front surface of the battery and the second fixing device. The clamp members may press the top surface of the battery downward by the first fixing device and press the front surface backward by the second fixing device.

[0018] A force transmission member may be provided, which is positioned between the fixing member and the battery and transmits the pressing force applied by the fixing member to the battery.

[0019] The fixing member may directly or indirectly contact the front upper corner of the battery and apply a rearward and downward pressing force to the battery.

[0020] A work machine according to one aspect of the present invention is equipped with the battery stand described above. [Effects of the Invention]

[0021] According to the battery holder and work machine equipped therewith, the battery can be easily and securely fixed. [Brief explanation of the drawing]

[0022] [Figure 1] It is a perspective view of a work machine equipped with the battery stand of the present invention. [Figure 2] It is a side view of a work machine equipped with the battery stand of the present invention. [Figure 3] It is a plan view showing the arrangement of the battery with respect to the machine body. [Figure 4] It is a perspective view of the battery stand of the first embodiment seen from the upper right obliquely. [Figure 5] It is a cross-sectional view of the battery stand of the first embodiment cut at the center in the left-right direction. [Figure 6] It is a view showing the attachment / detachment operation of the battery in the battery stand of the first embodiment. [Figure 7A] It is a view showing the fixing member in a state where the fastening member is loosened. [Figure 7B] It is a view showing the relationship between the pressing force applied from the fixing member in a state where the fastening member is tightened and the friction surface. [Figure 8] It is a side view showing the relationship between the holding member, the pressing member, and the bracket in the second embodiment. [Figure 9A] It is a side view showing an embodiment in which the fixing member is indirectly abutted against the front upper part of the battery. [Figure 9B] It is a side view showing an embodiment in which the fixing member is directly abutted against the front upper part of the battery.

Mode for Carrying Out the Invention

[0023] [First Embodiment] Hereinafter, a first embodiment of the battery stand 50 according to the present invention will be described.

[0024] FIG. 1 is a perspective view showing a work machine 1 equipped with the battery stand 50 of the first embodiment. FIG. 2 is a side view of the work machine 1.

[0025] In the first embodiment, the battery holder 50 secures the battery BT to a work machine 1 equipped with a work device 4, such as construction machinery and agricultural machinery. However, the battery holder 50 of the present invention may also secure the battery BT to a vehicle other than the work machine 1, such as a tractor or tiller. In the first embodiment, a backhoe, which is a slewing work machine, is exemplified as the work machine 1.

[0026] The work machine 1 of the first embodiment comprises a machine body (turntable) 2, a traveling device 3, and a work device 4. The machine body 2 is provided with a driver's seat 6. An operator (driver) can sit in the driver's seat 6. The driver's seat 6 is positioned to the left and forward of the machine body 2.

[0027] In the first embodiment, the battery stand 50 fixes the battery BT with its front (one of the two long sides of the top surface among the four sides provided around the battery BT. In particular, in this embodiment, the side closer to the terminal 49 is referred to as the "front" of the battery BT) facing forward of the work machine 1. However, the fixing direction of the battery BT in the battery stand 50 of the present invention is not limited to the direction shown in the first embodiment (the direction in which the front of the battery BT faces forward of the work machine 1). For example, the battery stand 50 of the present invention may fix the battery BT with its front facing backward, to the left, to the right, and to the front left of the work machine 1.

[0028] In the following explanation, the battery base 50 and the implement 1 will be described with reference to the direction in which the front of the battery BT faces forward of the implement 1.

[0029] In other words, the directions such as front, rear, left, and right when describing the battery base 50 and the work machine 1 are defined as follows:

[0030] In the state (posture) where the work device 4 (working tool such as a bucket) is facing the forward direction of the travel device 3, the direction towards the front of the operator seated in the driver's seat 6 of the work machine 1 (direction of arrow A1 in Figure 2) is defined as forward. The direction towards the rear of the operator (direction of arrow A2 in Figure 2) is defined as rear. The direction of arrow K1 in Figure 2 is defined as the front-back direction. Also, the direction towards the left of the operator seated in the driver's seat 6 (front side in Figure 2) is defined as left. The direction towards the right of the operator (back side in Figure 2) is defined as right.

[0031] Furthermore, as shown in Figure 3, the horizontal direction perpendicular to the longitudinal direction K1 is defined as the aircraft width direction K2. The direction from the center of the aircraft width direction toward the right or left is defined as the aircraft outward direction. In other words, the aircraft outward direction is the direction parallel to the aircraft width direction and away from the center of the aircraft width direction. The direction opposite to the aircraft outward direction is defined as the aircraft inward direction. In other words, the aircraft inward direction is the direction parallel to the aircraft width direction and approaching the center of the aircraft width direction.

[0032] As shown in Figures 1 and 2, the traveling device 3 has a traveling frame 9 and traveling mechanisms 10 provided on the left and right sides of the traveling frame 9. The traveling mechanism 10 in this embodiment is a crawler-type traveling mechanism driven by a hydraulic motor. A dozer device 7, which can be raised and lowered by a hydraulic cylinder, is mounted on the front of the traveling device 3.

[0033] As shown in Figures 1 and 2, the working device 4 is located at the front of the machine body 2 and includes a boom 15, an arm 16, and a bucket (working tool) 17. The base of the boom 15 is pivotally attached to a swing bracket 14 so as to be rotatable (up and down swingable) around a horizontal axis (an axis extending in the machine body width direction K2). The swing bracket 14 is supported by a support bracket 18 located at the front of the machine body 2 so as to be rotatable around a vertical axis (an axis extending in the vertical direction). The arm 16 is pivotally attached to the tip of the boom 15 so as to be rotatable (back and forth or up and down swingable) around a horizontal axis. The bucket 17 is attached to the tip of the arm 16 so as to be able to perform scooping and dumping operations.

[0034] The work machine 1 can be fitted with other work tools (hydraulic attachments) that can be driven by a hydraulic actuator, either in place of the bucket 17 or in addition to the bucket 17. Examples of these other work tools include hydraulic breakers, hydraulic crushers, angle brooms, earth augers, pallet forks, sweepers, mowers, and snow blowers.

[0035] The swing bracket 14 swings due to the extension and retraction of the hydraulic cylinder. The boom 15 swings due to the extension and retraction of the boom cylinder C3. The arm 16 swings due to the extension and retraction of the arm cylinder C4. The bucket 17 performs scooping and dumping operations due to the extension and retraction of the bucket cylinder (work tool cylinder) C5. The boom cylinder C3, arm cylinder C4, and bucket cylinder C5 are composed of hydraulic cylinders (hydraulic actuators).

[0036] As shown in Figures 1 and 2, the machine body 2 is supported on the travel frame 9 (travel device 3) via a slewing bearing 8 so that it can rotate around the longitudinal axis (rotate left and right).

[0037] As shown in Figure 3, the aircraft body 2 has a rotating frame 41 that forms its skeleton. The rotating frame 41 is constructed by fixing reinforcing ribs 43, support brackets 18, and brackets and stays for attaching equipment (including tanks) and other parts mounted on the aircraft body 2 to a rotating base plate 42 that forms the bottom of the aircraft body 2.

[0038] As shown in Figures 1 and 2, the aircraft body 2 is equipped with an operation unit 23, including a driver's seat 6.

[0039] The control unit 23 is located slightly to the left of the center of the aircraft body 2. As shown in Figure 2, a floor step 19 is provided at the front of the aircraft body 2, forming the floor surface of the aircraft body 2 (the floor surface on top of the aircraft body). This floor step 19 covers the left side of the front of the slewing frame 41. The control unit 23 is mounted behind the floor step 19.

[0040] As shown in Figures 2 and 3, a bonnet 22 is provided behind the driver's unit 23. Inside the bonnet 22, a motor chamber E2 is formed to house the motor E1. The motor E1 is, for example, a diesel engine, which drives a hydraulic pump P1 that discharges hydraulic fluid (pressurized oil) to drive hydraulic actuators such as hydraulic motors and hydraulic cylinders equipped on the work machine 1. In this embodiment, the hydraulic pump P1 is mounted below the motor E1 inside the bonnet 22.

[0041] The prime mover E1 may be a gasoline engine, an electric motor, or a hybrid type having both an engine and an electric motor.

[0042] The bonnet 22 surrounds the engine E1. Inside the bonnet 22, there is a support frame that supports the bonnet 22 relative to the airframe 2 (rotating frame 41). The driver's seat 6 is located in front of the bonnet 22.

[0043] As shown in Figure 3, a fuel tank 45 is located approximately in the center of the front-rear direction K1 on the right side of the rotating base plate 42 (rotating frame 41). A battery BT is located in front of the fuel tank 45.

[0044] As shown in Figure 1A, the battery BT is a storage battery installed in the work machine 1 and supplies power to electronic devices such as control devices and meters that perform various controls related to the work machine 1. The battery BT in this embodiment is a lead-based secondary battery with an anode on the left front and a cathode on the right front. The battery BT of the present invention may be a lithium-ion battery or a solid-state battery, etc. A wiring cable is connected to terminal 49 of the battery BT. The battery BT supplies power to the aforementioned electronic devices via the wiring cable.

[0045] As shown in Figure 4, the battery BT is attached to the rotating frame 41 of the aircraft body 2 using a battery stand 50.

[0046] The battery mount 50 secures the battery BT to the slewing frame 41 (aircraft body 2). Specifically, the battery mount 50 includes a mounting base 54 on which the battery BT is placed, a restricting member 55 positioned on the rear side of the battery BT to restrict its rearward movement, and a fixing member 53 positioned above or above the restricting member 55 and extending across the front of the battery BT to secure the battery BT.

[0047] As shown in Figures 4 and 5, the mounting base 54 is a plate member on which the battery BT can be placed, and is wider than the battery BT in the left-right and front-back directions. In this embodiment, the rear end of the mounting base 54 is connected to the middle of the regulating member 55 in the vertical direction, and the mounting base 54 is integrally connected to the regulating member 55.

[0048] The central part of the front end of the mounting base 54 protrudes forward compared to the left and right sides. A second engagement hole 56b is formed in the central part of the front end of the mounting base 54. The lower end of the second fixing device 53b, which will be described later, is engaged with the second engagement hole 56b.

[0049] A first stopper 57a and a second stopper 57b are formed on the upper surface of the mounting base 54. The first stopper 57a is formed at the left end of the front part of the upper surface of the mounting base 54 by combining vertically upright plate members in a crisscross pattern. Specifically, the first stopper 57a includes a lateral restricting piece 58a extending along the left-right direction and a vertical restricting piece 58b extending along the front-back direction. The lateral restricting piece 58a restricts the battery BT from moving forward relative to the mounting base 54. The vertical restricting piece 58b restricts the battery BT from moving to the left relative to the mounting base 54.

[0050] The second stopper 57b is formed as a vertically upright plate member on the upper surface of the mounting base 54. The second stopper 57b has a left restricting piece 57L formed at the left end of the mounting base 54 and a right restricting piece 57R formed at the right end of the mounting base 54. The left restricting piece 57L restricts the battery BT from moving to the left relative to the mounting base 54. The right restricting piece 57R restricts the battery BT from moving to the right relative to the mounting base 54.

[0051] A non-slip mat 59 is provided on the upper surface of the mounting base 54 to increase the frictional force between it and the bottom surface of the battery BT. In this embodiment, the non-slip mat 59 is provided on the left and right sides of the bottom surface of the battery BT, respectively. Alternatively, a mat similar to the non-slip mat 59 may be provided on the back (rear) surface of the battery BT.

[0052] As shown in Figures 4 and 5, the restricting member 55 is positioned behind the mounting base 54 and is formed in a plate shape that stands upright along the vertical direction. The restricting member 55 restricts the movement of the battery BT toward the rear. In the first embodiment, the upper end of the restricting member 55 is located even higher than the upper surface of the battery BT. One end (rear end) of the fixing member 53 is connected to the restricting member 55 at a position above the upper surface of the battery BT.

[0053] Furthermore, the battery stand 50 of the present invention also includes a configuration in which the upper end of the restricting member 55 is located below the upper surface of the battery BT. In addition, one end (rear end) of the fixing member 53 only needs to be connected to the upper part or above the restricting member 55, and does not need to be directly connected to the restricting member 55.

[0054] For example, a restricting member 55 lower than the height of the battery BT is provided on the upper surface of the mounting base 54. Then, a support member different from the restricting member 55 is provided above the restricting member 55, at a position even higher than the height of the battery BT, and one end (rear end) of the fixing member 53 may be connected to this support member.

[0055] In the first embodiment, a connecting member 60 is provided above the upper surface of the battery BT in the restricting member 55, connecting one end (rear end) of the fixing member 53. The connecting member 60 is formed in a plate shape that protrudes forward from the front surface of the restricting member 55. The connecting member 60 in this embodiment has a left connecting member 60L formed to the left of the restricting member 55 (battery BT) and a right connecting member 60R formed to the right of the restricting member 55 (battery BT).

[0056] A first engagement hole 56a is formed in the center of the left connecting member 60L and the center of the right connecting member 60R, for engaging one end (rear end) of the fixing member 53. The first engagement hole 56a is formed to penetrate vertically through the center of the left connecting member 60L and the center of the right connecting member 60R.

[0057] As shown in Figure 4, the fixing member 53 is located on the inside in the width direction of the battery BT placed on the mounting base 54, and more specifically, one fixing member is provided on the inside in the width direction. In the first embodiment, the fixing member 53 is provided in the center in the width direction of the battery BT placed on the mounting base 54.

[0058] As shown in Figures 5 and 6, the fixing member 53 includes a first fixing device 53a positioned on the upper side of the battery BT, a second fixing device 53b positioned on the front side of the battery BT, and a connecting portion 90 that connects the first fixing device 53a and the second fixing device 53b. The fixing member 53 is configured to fix the battery BT by connecting the other end (front end) of the first fixing device 53a and one end (upper end) of the second fixing device 53b with the connecting portion 90. In the fixing member 53, either the other end (front end) of the first fixing device 53a or one or both of the one end (upper end) of the second fixing device 53b are inclined with respect to both the horizontal and vertical directions.

[0059] The first fastener 53a and the second fastener 53b in the first embodiment are made of a rigid material that does not undergo elastic deformation, such as metal. However, the first fastener 53a and the second fastener 53b may be made of an elastic material that undergoes elastic deformation, or they may not be.

[0060] In the first embodiment, one end (rear end) of the first fixing device 53a is connected to the upper part or above the regulating member 55 (a position above the upper surface of the battery BT). The one end (rear end) of the first fixing device 53a is connected to the upper part or above the regulating member 55 at two points spaced apart in the left-right direction. The other end (front end) of the first fixing device 53a is positioned above the front of the battery BT. The other end (front end) of the first fixing device 53a is connected to one end (upper end) of the second fixing device 53b via a connecting portion 90 at a single point in the center in the left-right direction.

[0061] One end (rear end) of the first fixing device 53a is connected to the upper part of the regulating member 55 such that the other end (front end) is able to swing vertically (towards and away from the battery BT). Specifically, the first fixing device 53a in this embodiment has a left rear part 53RL connected to the left connecting member 60L, a right rear part 53RR connected to the right connecting member 60R, a front part 53F connected to the second fixing device 53b, and an intermediate part 53M that connects the left rear part 53RL, the rear end of the front part 53F, and the right rear part 53RR in the left-right direction. The left rear part 53RL and the right rear part 53RR are formed in a rod shape that extends in the front-rear direction. The rear ends of the left rear section 53RL and the right rear section 53RR are both formed in a hook shape (approximately J-shaped when viewed from the side) that curves downward, and are engaged with the first engagement holes 56a of the left connecting member 60L and the right connecting member 60R.

[0062] The first engagement holes 56a of the left connecting member 60L and the right connecting member 60R have opening diameters larger than the outer diameters of the left rear portion 53RL and the right rear portion 53RR of the first fixing device 53a. Therefore, the left rear portion 53RL is pivotable in the vertical direction relative to the first engagement hole 56a of the left connecting member 60L. The right rear portion 53RR is pivotable in the vertical direction relative to the first engagement hole 56a of the right connecting member 60R.

[0063] The intermediate section 53M of the first fixing device 53a connects the front end of the left rear section 53RL and the front end of the right rear section 53RR in the left-right direction. The intermediate section 53M is formed of a rod having a roughly L-shaped cross-section when viewed from the side. The front ends of the left rear section 53RL and the front end of the right rear section 53RR are joined to both ends of the intermediate section 53M so as to intersect from above. The rear end of the front section 53F of the first fixing device 53a is joined to the intermediate section 53M in the left-right direction so as to intersect from below.

[0064] The front end of the left rear section 53RL and the front end of the right rear section 53RR are joined to the intermediate section 53M from above, and the rear end of the front section 53F is joined from below. In other words, when viewed from the left rear section 53RL and the right rear section 53RR, the front section 53F is located below by the thickness of the intermediate section 53M. By using the first fixing device 53a which has thickness in the vertical direction at its front and rear ends in this way, the front end of the first fixing device 53a and members such as the pressing member 67 provided at the front end can be easily pressed against the upper surface of the battery BT.

[0065] The rear end of the front portion 53F of the first fixing device 53a is connected to the center in the left-right direction of the intermediate portion 53M. The front portion 53F is formed in a rod shape that extends in the front-rear direction, similar to the rear portion 53R. A pressing member 67 (the upper end of the second fixing device 53b) is provided at the front end of the front portion 53F.

[0066] As shown in Figure 5, a cover 79 covering the battery BT is provided on the upper part of the first fixing device 53a. The cover 79 is made of an electrically non-conductive material such as resin. The cover 79 is wider in the left-right and front-back directions than the top surface of the battery BT. In other words, the cover 79 has a larger area than the top surface of the battery BT and can cover the entire top surface of the battery BT. By covering the entire top surface of the battery BT with the cover 79, the insulation of the terminal 49 can be further improved, and the risk of leakage current and electric shock can be reduced.

[0067] The second fixing device 53b is positioned on the front side of the battery BT. One end (upper end) of the second fixing device 53b is connected to the other end (front end) of the first fixing device 53a, and the other end (lower end) extends to the front side of the battery BT and is connected to the mounting base 54. The second fixing device 53b is a rod-shaped member that extends upward in front of the battery BT and is bent at an intermediate point in the vertical direction (bent portion 53c). In other words, the second fixing device 53b in this embodiment is bent at approximately the same position in the vertical direction as the top surface of the battery BT, and the bent portion 53c of the second fixing device 53b in this embodiment is approximately the same position in the vertical direction as the top surface of the battery BT. The lower part of the second fixing device 53b below the bent portion 53c is a straight portion 62 that extends linearly along the vertical direction. The lower part of the bent portion 53c of the second fixing device 53b constitutes the other end (lower end) of the second fixing device 53b. Furthermore, the second fastener 53b of this embodiment has an inclined portion 63 that extends in an inclined direction relative to the straight portion 62, from the middle portion (bent portion 53c) to one end (above the bent portion 53c). The upper part of the bent portion 53c (inclined portion 63) of the second fastener 53b constitutes one end (upper end) of the second fastener 53b.

[0068] The other end (lower end) of the second fixing device 53b is connected to the mounting base 54 such that one end (upper end) can swing freely in the front-rear direction. Specifically, the lower end of the straight section 62 is formed in a hook shape that curves forward, similar to the rear ends of the left rear section 53RL and the right rear section 53RR described above. The lower end of the straight section 62 engages with the second engagement hole 56b formed in the mounting base 54. The second engagement hole 56b of the mounting base 54 has an opening diameter larger than the outer diameter of the straight section 62. Therefore, the lower end of the straight section 62 is made swingable relative to the mounting base 54, with one end (upper end) able to swing in the front-rear direction of the battery BT (in the direction approaching and away from the battery BT).

[0069] A retaining member 64 for the second engagement hole 56b is provided at the lower part of the straight section 62. The retaining member 64 is formed to be larger than the opening diameter of the second engagement hole 56b. By providing such a retaining member 64, the straight section 62 (second fixing device 53b) located above the retaining member 64 is prevented from falling through the second engagement hole 56b to below the mounting base 54.

[0070] The inclined portion 63 is inclined in a direction that moves closer to the rear surface of the battery BT as it extends upward. With the straight portion 62 facing up and down, the inclined portion 63 is inclined at an angle of approximately 45 degrees towards the rear, with the top as the reference point (0 degrees). In this embodiment, the inclination angle of the inclined portion 63 is approximately 45 degrees, but the inclination angle of the inclined portion 63 may be approximately 30 degrees or approximately 60 degrees, and is not limited to approximately 45 degrees. Furthermore, in the above-described embodiment, the inclined portion 63 is inclined forward due to the bending of the bent portion 53c, but it is sufficient that it is at least inclined, and the intermediate portion (bent portion 53c in this embodiment) may be a rod-shaped member constituting the second fixing device 53b that is curved toward the rear.

[0071] For example, when using a heavy battery BT, a large weight is applied downwards to the mounting base 54, and the frictional force generated between the bottom surface of the battery BT and the mounting base 54 also increases. In such cases, the inclination angle of the inclined portion 63 can be reduced to less than approximately 45 degrees, so that a larger force acts horizontally on the restricting member 55 (suppressing the force acting vertically). Conversely, when using a light battery BT, the inclination angle of the inclined portion 63 can be increased to more than approximately 45 degrees, so that the horizontal force acting on the restricting member 55 of the bracket 51 is reduced, and the downward force applied to the mounting base 54 is increased. In other words, in the battery stand 50 of the present invention, the inclination angle of the inclined portion 63 can be changed arbitrarily.

[0072] A screw groove 65 is provided at the upper end of the inclined portion 63. The screw groove 65 is formed in a helical shape with respect to the axis of the inclined portion 63 (the axis of the rod-shaped member constituting the inclined portion 63). The retaining member 52 of the connecting portion 90, which will be described later, can be screwed into the screw groove 65.

[0073] In the battery stand 50 of the present invention, the connecting portion 90 changes the connection position between the first fixing device 53a and the second fixing device 53b along the inclination direction of the fixing member 53. As a result, the fixing member 53 can change at least one of the lengths of the first fixing device 53a from the first engagement hole 56a to the connecting portion 90, and the length of the second fixing device 53b from the second engagement hole 56b to the connecting portion 90. In other words, the fixing member 53 is configured so that the effective length of the fixing member 53 (the length of the portion that contributes to pressing and fixing the battery BT) from the first engagement hole 56a to the second engagement hole 56b along the upper and front surface of the battery BT can be changed.

[0074] Specifically, the connecting portion 90 includes an inclined portion 63 and a holding member 52 that adjusts the connection position of the other end of the first fixing device 53a and the second fixing device 53b relative to the inclined portion 63. In the first embodiment, the inclined portion 63 is formed on one end (upper end) of the second fixing device 53b, and the connecting portion 90 adjusts the connection position between the inclined portion 63 of the second fixing device 53b and the other end (front end) of the first fixing device 53a using the holding member 52.

[0075] As described above, in the first embodiment, an inclined portion 63 is formed on one end (upper end) of the second fixing device 53b. However, the inclined portion 63 only needs to be provided on one of the first fixing device 53a and the second fixing device 53b and inclined in a direction that moves closer to the rear surface of the battery BT as it goes upwards, and may also be provided on the first fixing device 53a. In such a case, the connecting portion 90 adjusts the connection position between the inclined portion 63 of the first fixing device 53a and one end (upper end) of the second fixing device 53b using the holding member 52.

[0076] The retaining member 52 will now be described in detail. The retaining member 52 moves along the inclined portion 63 and changes the connection position of the other end of the first fixing device 53a and the second fixing device 53b relative to the inclined portion 63. In the first embodiment, the retaining member 52 is provided on the inclined portion 63 of one end (upper end) of the second fixing device 53b and holds the position of the other end (front end) of the first fixing device 53a relative to the inclined portion 63. In the first embodiment, a fastening member such as a nut is used as such a retaining member 52. In other words, in the battery stand 50 of the first embodiment, the retaining member 52 is a fastening member such as a nut that screws into a screw groove 65 formed in the inclined portion 63. If such a fastening member 77 is used as a retaining member 52, the fastening member 77 moves the inclined portion 63 of one end (upper end) of the second fastener 53b in the inclined direction, thereby changing the position (relative position) of the other end (front end) of the first fastener 53a relative to one end (upper end) of the second fastener 53b in the inclined direction, and the connection position between the first fastener 53a and the second fastener 53b can be changed.

[0077] The other end of the first fastener 53a and the second fastener 53b has an inclined surface 74 formed thereon, which is inclined in a direction intersecting the inclination direction of the inclined portion 63. In the first embodiment, the inclined surface 74 is formed on the other end (front end) of the first fastener 53a, and the inclined surface 74 is inclined in a direction intersecting the inclined surface of the inclined portion 63 of the second fastener 53b. In other words, the inclined surface 74 is formed on the other end (front end) of the first fastener 53a. The inclined surface 74 is formed to face the one end side (rear-upper) of the first fastener 53a. The holding member 52 (fastening member 77) then contacts the inclined surface 74 to maintain the position of one end (upper end) of the second fastener 53b relative to the inclined surface 74.

[0078] Furthermore, if the inclined surface 74 is formed on the second fixing device 53b, the holding member 52 (fastening member 77) contacts the inclined surface 74 to maintain the position of the other end (front end) of the first fixing device 53a relative to the inclined surface 74.

[0079] Next, the holding member 52 (fastening member 77) of the connecting portion 90 and the inclined surface 74 of the first fixing device 53a of the first embodiment will be described.

[0080] As shown in Figure 6, the fastening member 77 (retaining member 52) in this embodiment is a double-nut type and consists of two nuts that are screwed into the screw groove 65. By using a double-nut type fastening member 77, it is possible to suppress the fastening member 77 from loosening relative to the screw groove 65.

[0081] Although a double nut is used for the fastening member 77 in this embodiment, the fastening member 77 of the present invention is not limited to a double nut. For example, a nut with an anti-loosening function such as a self-locking nut that generates frictional force by contacting the screw groove 65, a nut with a hardened resin coating applied in advance to the contact point with the screw groove 65, a flange nut, or a disc spring nut can be used.

[0082] The inclined surface 74 is inclined at an angle of approximately 45 degrees upward and forward, with the top as the reference point (0 degrees). Specifically, in the battery stand 50 of the first embodiment, a slope member 75 with an inclined surface 74 is provided at the other end (front end) of the first fixing device 53a. Between the slope member 75 and the other end (front end) of the first fixing device 53a, a pressing member 67 is provided to press the battery BT downward. If the inclined surface 74 of the slope member 75 is formed to be inclined forward at 45 degrees, it will intersect with the inclined portion 63 of the second fixing device 53b, which is inclined backward at 45 degrees, at approximately 90 degrees. As a result, the fastening force by the fastening member 77, which will be described later, can be applied to the inclined surface 74 from the normal direction, and the fastening force by the fastening member 77 can be reliably applied to the upper surface of the battery BT via the inclined surface 74 (slope member 75), the pressing member 67, and the clamp member 69.

[0083] The pressing member 67 is positioned between the other end (front end) of the first fixing device 53a and the slope member 75. The pressing member 67 is a plate-shaped member positioned so that its plate surfaces face each other in the vertical direction, and is capable of making surface contact with the upper surface of the battery BT. The slope member 75 is provided on the front upper surface of the pressing member 67.

[0084] The slope member 75 is a corner-shaped member positioned on the upper surface of the pressing member 67. An inclined surface 74 that slopes forward at a 45-degree angle is formed on the upper part of the slope member 75. A rib member 91 is provided on the lower part of the slope member 75.

[0085] An insertion hole 76 is formed in the inclined surface 74 of the slope member 75 for inserting the inclined portion 63 of the second fixing device 53b. The insertion hole 76 is formed in the inclined surface 74 as an elongated hole that is long in the front-rear direction. The insertion hole 76 is formed from the front end of the inclined surface 74 to the middle of the inclined surface 74 in the front-rear direction. The insertion hole 76 opens toward the front, making it possible to insert the inclined portion 63 of the second fixing device 53b while swinging it from the front. The opening width of the insertion hole 76 along the left-right direction is formed to be wider than the outer diameter of the second fixing device 53b (inclined portion 63). By forming the opening width of the insertion hole 76 to be wider than the outer diameter of the second fixing device 53b, the second fixing device 53b is made able to be freely inserted into the insertion hole 76.

[0086] Below the slope member 75 of the pressing member 67, a guide hole 78 is formed so that the inclined portion 63 of the second fixing device 53b can be inserted all the way into the insertion hole 76. The guide hole 78, like the insertion hole 76, is formed in the front part of the pressing member 67 as an elongated hole that is long in the front-to-back direction and opens towards the front.

[0087] As shown in Figures 4 and 5, the slope member 75 has rib members 91 on the upper surface of the pressing member 67. The rib members 91 are formed on the left and right sides of the guide hole 78 on the upper surface of the pressing member 67, respectively. Both the left and right rib members 91 are formed as triangular plate members when viewed from the left or right. Both the left and right rib members 91 are formed to extend along the front-rear and up-down directions. By providing such left and right rib members 91, it becomes possible to stably support the inclined surface 74 at a predetermined inclination angle (45 degrees to the rear in this embodiment) with respect to the upper surface of the pressing member 67.

[0088] Furthermore, if rib members 91 are provided on both the left and right sides of the guide hole 78, the guide hole 78 is formed between the left rib member 91 and the right rib member 91, allowing the second fixing device 53b (inclined portion 63) to be smoothly guided into the guide hole 78.

[0089] Next, using Figures 7A and 7B, we will explain the pressing force (force Ft) generated on the battery BT when the fastening member 77 is screwed into the screw groove 65.

[0090] Figure 7A shows the battery base 50 before the fastening member 77 is screwed into the screw groove 65, in other words, when the fastening member 77 is loose. Figure 7B shows the battery base 50 after the fastening member 77 has been screwed into the screw groove 65, in other words, when the fastening member 77 is fastened and a pressing force (force Ft) is generated.

[0091] As shown in Figure 7A, before the fastening member 77 is screwed into the screw groove 65, the fastening member 77 is located at the tip of the inclined portion 63 (the connection position of the connecting portion 90 is at the tip of the inclined portion 63). Therefore, the length L1 of the second fastener 53b along the inclination direction from the bent portion 53c to the fastening member 77 is longer than the length L2 when the fastening member 77 is fastened, as shown in Figure 7B.

[0092] When the fastening member 77 is tightened, the fastening member 77 moves to the base end of the inclined portion 63 (towards the bent portion 53c), and the length of the second fixing device 53b from the bent portion 53c to the fastening member 77 shortens from L1 to L2. As a result, the connection position of the connecting portion 90 moves from the tip to the base end of the inclined portion 63, the first fixing device 53a rotates downward (in the R1 direction in the figure), and the second fixing device 53b rotates backward (in the R2 direction in the figure).

[0093] As shown in Figure 7B, when the fastening member 77 is screwed further into the screw groove 65, the connection position of the connecting portion 90 moves further toward the base end (bent portion 53c side) of the inclined portion 63, and the pressing member 67 presses downward against the upper surface of the battery BT, generating a downward pressing force Fd on the upper surface of the battery BT. In addition, the second fixing device 53b, which rotates toward the rear, comes into contact with the front surface of the battery BT, generating a rearward pressing force Fr on the front surface of the battery BT.

[0094] As a result, a downward-rear pressing force Ft (indicated by the white arrow in the figure) is generated on the battery BT as the resultant of the downward pressing force Fd and the backward pressing force Fr. When the pressing force Fd acts on the bottom surface of the battery BT and the top surface of the mounting base 54, a frictional force is generated on the bottom surface of the battery BT when the battery BT attempts to move horizontally, thereby restricting the battery BT's horizontal movement. In addition to the frictional force on the bottom surface of the battery BT, when the pressing force Fr acts on the rear surface of the battery BT and the front surface of the restricting member 55, a frictional force is also generated on the rear surface of the battery BT. As a result, frictional forces are generated on two surfaces of the battery BT, the bottom and rear, making it possible to more reliably suppress the horizontal movement of the battery BT.

[0095] In the case of the first embodiment, clamp members 69 are provided between the upper surface of the battery BT and the front end of the first fixing device 53a, and between the front surface of the battery BT and the second fixing device 53b. In other words, the fixing device 53 presses the battery BT in two directions, downward and backward, via the clamp members 69.

[0096] The clamp member 69 is positioned on the upper front edge of the battery BT, straddling the top and front surfaces of the battery BT. The clamp member 69 has an L-shaped cross-section when viewed from the left and right. The part of the clamp member 69 behind the L-shaped bend forms a first surface contact portion 70 that makes surface contact with the front upper surface of the battery BT. The part of the clamp member 69 below the L-shaped bend forms a second surface contact portion 71 that makes surface contact with the upper front surface of the battery BT.

[0097] A projection 73 is formed at the rear end of the first surface contact portion 70, which is bent to protrude upward. The projection 73 has a left projection 73L formed at the left rear end of the first surface contact portion 70 and a right projection 73R formed at the right rear end of the first surface contact portion 70. The space between the left projection 73L and the right projection 73R is formed flush with the front end of the first surface contact portion 70. The pressing member 67 of the holding member 52 is superimposed on the first surface contact portion 70 (upper surface of the first surface contact portion 70) between the left projection 73L and the right projection 73R so that it can move in the front-rear direction.

[0098] A force transmission member 72 is positioned between the fixing member 53 and the battery BT. The force transmission member 72 transmits the pressing force from the fixing member 53 to the battery BT. Specifically, the force transmission member 72 is provided on the second surface contact portion 71 of the clamp member 69 and contacts the upper part of the straight portion 62 of the second fixing device 53b, transmitting the pressing force to the second surface contact portion 71. The force transmission member 72 is a rod-shaped member positioned so that its axis is oriented in the left-right direction, and is capable of evenly transmitting the pressing force across the entire width of the second surface contact portion 71 from the left end to the right end. Holding members 52 are stacked front to back on the surface (front) of the second surface contact portion 71.

[0099] In this embodiment, a cylindrical rod-shaped force transmission member 72 is used, but the configuration of the force transmission member 72 is not limited to this. For example, the cross-sectional shape may be elliptical or polygonal, and it may be solid or hollow. Furthermore, the force transmission member 72 may be formed by curving or bending plate-shaped members that constitute the first surface contact portion 70 and the second surface contact portion 71.

[0100] Furthermore, as shown in Figure 9A, the force transmission member 72 may be omitted, and the second fixing device 53b may be brought into direct contact with the second surface contact portion 71 of the clamp member 69. In other words, the example in Figure 9A can also be described as the fixing member 53 (second fixing device 53b) indirectly contacting the front upper corner portion 92 of the battery BT via the clamp member 69, thereby applying a rearward pressing force Fr and a downward pressing force Fd to the battery BT.

[0101] Alternatively, as shown in Figure 9B, the force transmission member 72 and the clamp member 69 may be omitted, and the second fixing device 53b may be brought into direct contact with the front upper corner 92 of the battery BT. In this case, a rearward pressing force Fr and a downward pressing force Fd can be applied to the battery BT.

[0102] Furthermore, the force transmission member 72 may be attached to the second fixing device 53b or the first fixing device 53a instead of the clamp member 69, or it may be configured to be sandwiched between the clamp member 69 and the second fixing device 53b without being fixed to any of the clamp member 69, the second fixing device 53b, or the first fixing device 53a.

[0103] Next, the procedure for fixing and releasing the battery holder 50 of the first embodiment, in other words, the method for attaching and detaching the battery BT to the battery holder 50 of the present invention, will be described.

[0104] As shown on the left of Figure 7, when removing the battery BT fixed to the battery stand 50 of the first embodiment, the fastening member 77 is rotated in the loosening direction relative to the screw groove 65 to loosen the fastening member 77 relative to the screw groove 65. When the fastening member 77 is loosened, the connection position of the connecting part 90 moves in the inclined direction from the base end to the tip of the inclined part 63, and the inclined part 63 of the second fixing device 53b, which was fixed to the insertion hole 76, becomes able to detach from the insertion hole 76. In addition, the first fixing device 53a becomes able to swing in the direction away from the upper surface of the battery BT (upward), so the downward pressing force Fd acting on the upper surface of the battery BT disappears. Furthermore, the second fixing device 53b becomes able to swing in the direction away from the front surface of the battery BT (forward), so the rearward pressing force Fr acting on the front surface of the battery BT disappears. As a result, as shown on the right of Figure 7, the battery BT fixed to the battery stand 50 can be removed.

[0105] When fixing the battery BT to the battery base 50, the battery BT can be fixed to the bracket 51 by performing the operation in the reverse order of the operation used to remove the battery BT.

[0106] The battery stand 50 described above comprises a mounting base 54 on which the battery BT is placed, a restricting member 55 positioned on the rear side of the battery BT to restrict the movement of the battery BT to the rear, and a fixing member 53 positioned above or above the restricting member 55 and extending across the front of the battery BT to fix the battery BT. The fixing member 53 has a first fixing device 53a positioned on the upper side of the battery BT, a second fixing device 53b positioned on the front side of the battery BT, and a connecting portion 90 connecting the first fixing device 53a and the second fixing device 53b. The connecting portion 90 is provided on one of the first fixing device 53a and the second fixing device 53b and is inclined in a direction that moves closer to the rear side of the battery BT as it moves upward, and a holding member 52 that adjustably holds the connecting position of the other of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63.

[0107] By changing the connection position of the fixing member 53 between the first fixing device 53a and the second fixing device 53b along the inclination direction, the effective length of the fixing member 53 (the length of the part that contributes to pressing and fixing the battery BT) can be changed.

[0108] Furthermore, the first fixing device 53a has one end connected to the upper or upper part of the regulating member 55 and the other end positioned above the front of the battery BT, and the second fixing device 53b has an inclined portion 63 of the connecting portion 90 formed at one end and the other end connected to the mounting base 54.

[0109] By adjusting the connection position of both fixing devices 53a and 53b in the inclined direction, it is possible to change the effective length of the fixing member 53.

[0110] Furthermore, the second fixing device 53b is bent at an intermediate portion 53c (bent portion 53c), and the portion from the intermediate portion 53c to one end forms an inclined portion 63 that extends in the direction of inclination.

[0111] By using such a second fixing device 53b, the connection position of the other end (front end) of the first fixing device 53a can be changed with respect to the inclined portion 63 from the middle portion 53c to one end, making it possible to easily change the effective length of the fixing member 53.

[0112] Furthermore, the restricting member 55 extends from the mounting base 54 above the battery BT, one end (rear end) of the first fixing device 53a is connected to the upper part of the restricting member 55 so as to be able to swing vertically, and the other end of the second fixing device 53b is connected to the mounting base 54 so as to be able to swing in the front-rear direction of the battery BT.

[0113] By providing a first fixing device 53a that can swing vertically and a second fixing device 53b that can swing in the front-rear direction of the battery BT on the upper part of the restricting member 55, it becomes possible to apply pressing force to the top and front surfaces of the battery BT by easily changing the effective length of the fixing member 53. As a result, it becomes possible to generate frictional force on the bottom and rear surfaces of the battery BT.

[0114] Furthermore, the holding member 52 moves along the inclined portion 63, thereby changing the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63.

[0115] By providing such a retaining member 52, the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63 can be changed, and the effective length of the fixing member 53 can be easily changed.

[0116] Furthermore, the other end of the first fixing device 53a and the second fixing device 53b has an inclined surface 74 that is inclined in a direction intersecting the inclination direction, and the holding member 52 contacts the inclined surface 74 to maintain the connection position of the other end of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63.

[0117] By providing a retaining member 52 that contacts the inclined surface 74 in this manner, the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63 can be maintained.

[0118] Furthermore, a screw groove 65 is formed in the inclined portion 63, and the retaining member 52 is a fastening member 77 that screws into the screw groove 65.

[0119] By forming a screw groove 65 in the inclined portion 63 and providing a fastening member 77 that screws into the screw groove 65 as a retaining member 52, it is possible to not only maintain the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63, but also to easily change the effective length of the fixing member 53.

[0120] Furthermore, the fixing member 53 is located on the inside in the width direction of the battery BT placed on the mounting base 54.

[0121] If the fixing member 53 is provided on the inside in the width direction of the battery BT, the battery stand 50 will be compact in the width direction and can be installed without taking up a large space.

[0122] Furthermore, one fixing member 53 is provided on the inside in the width direction of the battery BT placed on the mounting base 54.

[0123] If only one fixing member 53 is installed on the inside in the width direction of the battery BT, the necessary operations for fastening, etc., can be completed in one step, making it possible to quickly fix the battery BT.

[0124] Furthermore, the battery stand 50 includes clamp members 69 positioned between the top surface of the battery BT and the first fixing device 53a, and between the front surface of the battery BT and the second fixing device 53b. The clamp members 69 press the top surface of the battery BT downwards by the first fixing device 53a and press the front surface backwards by the second fixing device 53b.

[0125] By providing such a clamping member 69, the pressing force can be evenly transmitted from the swinging fixed member 53 to the upper surface of the battery BT, thereby properly pressing the battery BT.

[0126] Furthermore, the battery stand 50 is positioned between the fixing member 53 and the battery BT, and includes a force transmission member 72 that transmits the pressing force from the fixing member 53 to the battery BT.

[0127] By providing such a force transmission member 72, the force transmitted to the force transmission member 72 can be appropriately applied as a pressing force to the battery BT.

[0128] Furthermore, the fixing member 53 directly or indirectly contacts the front upper corner 92 of the battery BT, applying a rearward and downward pressing force to the battery BT.

[0129] By transmitting force directly or indirectly from the fixing member 53 to the front upper corner 92 of the battery BT in this manner, an appropriate pressing force can be applied to the battery BT, even with a simple device configuration that does not use a force transmission member 72 or a clamping member 69.

[0130] Furthermore, the work machine 1 is equipped with the battery base 50 described above. This makes it possible to realize the work machine 1 that exhibits the unique effects described above.

[0131] [Second Embodiment] Next, the battery stand 50 of the second embodiment will be described.

[0132] Figure 8 is a cross-sectional view of the battery stand 50 of the second embodiment, viewed from the right side. As shown in Figure 8, the battery stand 50 of the second embodiment does not use fastening members 77 such as nuts as retaining members 52, but instead uses tightening fittings 83 such as toggle clamps.

[0133] Specifically, the holding member 52 of the second embodiment is provided with a slope member 75, similar to the first embodiment, and a hook member 84 is provided on the inclined surface 74 of the slope member 75. The hook member 84 is a metal fitting with a concave shape at its front upper end, and is capable of being hooked onto the fastening portion 86 of the fastening fitting 83.

[0134] The second fixing device 53b of the second embodiment also has an inclined portion 63, similar to the first embodiment. The inclined portion 63 of the second embodiment is formed in a flat plate shape, and a fastening fitting 83 is attached to the upper surface of the inclined portion 63.

[0135] The clamping fitting 83 is a toggle clamp and is equipped with a lever member 87 for pulling the latching portion 86 forward. In the clamping fitting 83, when the lever member 87 is tilted forward against the elastic force of an elastic member (not shown), the latching portion 86 can be locked in a forward-pulled (tightened) position.

[0136] In other words, in the battery stand 50 of the second embodiment, when the lever member 87 is tilted forward and the latching portion 86 is pulled forward, the distance between the other end (front end) of the first fixing device 53a and one end (upper end) of the second fixing device 53b is shortened, so the length of the fixing device 53 can be shortened, similar to the first embodiment. As a result, the first fixing device 53a is close to the upper surface of the battery BT, and the second fixing device 53b is close to the front surface of the battery BT. In other words, the first fixing device 53a comes into contact with the upper surface of the battery BT, generating a downward pressing force Fd on the upper surface of the battery BT. Also, a rearward pressing force Fr is generated on the front surface of the battery BT. Therefore, similar to the first embodiment, it is possible to generate frictional force on the bottom surface and the rear surface of the battery BT.

[0137] A preferred embodiment of the present invention provides a battery stand 50 and a work machine 1 as described in the following items.

[0138] (Item 1) The battery stand 50 comprises a mounting base 54 on which a battery BT is placed, a restricting member 55 positioned on the rear side of the battery BT to restrict the rearward movement of the battery BT, and a fixing member 53 positioned above or above the restricting member 55 and extending across the front of the battery BT to fix the battery BT, wherein the fixing member 53 has a first fixing device 53a positioned on the upper side of the battery BT, a second fixing device 53b positioned on the front side of the battery BT, and a connecting portion 90 connecting the first fixing device 53a and the second fixing device 53b, the connecting portion 90 having an inclined portion 63 provided on one of the first fixing device 53a and the second fixing device 53b and inclined in an inclined direction that moves closer to the rear side of the battery BT as it moves upward, and a holding member 52 that adjustably holds the connecting position of the other of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63.

[0139] According to the battery stand 50 related to item 1, the effective length of the fixing member 53 (the length of the part that contributes to pressing and fixing the battery BT) can be changed by changing the connection position of the fixing member 53 of the first fixing device 53a and the second fixing device 53b along the inclination direction.

[0140] (Item 2) The battery stand 50 according to item 1, wherein one end of the first fixing device 53a is connected to the upper or upper part of the regulating member 55 and the other end is positioned above the front of the battery BT, and the second fixing device 53b has the inclined portion 63 of the connecting portion 90 formed at one end and the other end is connected to the mounting stand 54 described above.

[0141] According to the battery stand 50 related to item 2, the effective length of the fixing member 53 can be changed by adjusting the connection position of both fixing devices 53a and 53b in the inclined direction.

[0142] (Item 3) The battery stand according to item 2, wherein the second fixing device 53b is bent at an intermediate portion 53c, and the portion from the intermediate portion 53c to the one end forms the inclined portion 63 which extends in the direction of inclination.

[0143] According to the battery stand 50 related to item 3, by using the second fixing device 53b, the connection position of the other end (front end) of the first fixing device 53a can be changed with respect to the inclined portion 63 from the middle portion 53c to one end, making it possible to easily change the effective length of the fixing member 53.

[0144] (Item 4) The regulating member 55 extends from the base 54 described above to above the battery BT, one end of the first fixing device 53a is connected to the upper part of the regulating member 55 so as to be able to swing vertically, and the other end of the second fixing device 53b is connected to the base 54 described above so as to be able to swing in the front-rear direction of the battery BT, as described in any of items 1 to 3.

[0145] According to the battery stand 50 related to item 4, if a first fixing device 53a that can swing vertically and a second fixing device 53b that can swing in the front-rear direction of the battery BT are provided on the upper part of the regulating member 55, it becomes possible to apply pressing force to the top and front surfaces of the battery BT by easily changing the effective length of the fixing member 53. As a result, it becomes possible to generate frictional force on the bottom and rear surfaces of the battery BT.

[0146] (Item 5) The battery stand 50 according to any one of items 1 to 4, wherein the holding member 52 moves along the inclined portion 63, thereby changing the connection position of the other of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63.

[0147] According to the battery stand 50 related to item 5, by providing the holding member 52, the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63 can be changed, and the effective length of the fixing member 53 can be easily changed.

[0148] (Item 6) The other of the first fixing device 53a and the second fixing device 53b has an inclined surface 74 formed on it that is inclined in a direction intersecting the inclination direction, and the holding member 52 contacts the inclined surface 74 to maintain the connection position of the other of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63, as described in any of items 1 to 5.

[0149] According to the battery stand 50 related to item 6, by providing a retaining member 52 that contacts the inclined surface 74, the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63 can be maintained.

[0150] (Item 7) The battery stand 50 according to any one of items 1 to 6, wherein a screw groove 65 is formed in the inclined portion 63, and the retaining member 52 is a fastening member 77 that screws into the screw groove 65.

[0151] According to the battery stand 50 related to item 7, by forming a screw groove 65 in the inclined portion 63 and providing a fastening member 77 that screws into the screw groove 65 as a retaining member 52, it is possible to maintain the other connection position of the first fixing device 53a and the second fixing device 53b with respect to the inclined portion 63, and the effective length of the fixing member 53 can also be easily changed.

[0152] (Item 8) The fixing member 53 is a battery stand 50 according to any one of items 1 to 7, located on the battery BT placed on the stand 54 described above in the width direction.

[0153] According to the battery stand 50 related to item 8, the fixing member 53 is provided on the inside in the width direction of the battery BT, so the battery stand 50 is compact in the width direction and can be installed without taking up a large space.

[0154] (Item 9) The aforementioned fixing member 53 is a battery stand 50 as described in item 8, which is provided on the inside in the width direction of the battery BT placed on the aforementioned stand 54.

[0155] According to the battery stand 50 related to item 9, since only one fixing member 53 is installed on the inside in the width direction of the battery BT, the necessary operations for fastening etc. can be completed in one step, making it possible to quickly fix the battery BT.

[0156] (Item 10) A battery stand 50 according to any one of items 1 to 9, comprising a clamp member 69 positioned between the upper surface of the battery BT and the first fixing device 53a, and between the front surface of the battery BT and the second fixing device 53b, wherein the clamp member 69 presses the upper surface of the battery BT downward by the first fixing device 53a and presses the front surface backward by the second fixing device 53b.

[0157] According to the battery stand 50 related to item 10, by providing a clamp member 69, the pressing force can be evenly transmitted from the swinging fixed member 53 to the upper surface of the battery BT, thereby properly pressing the battery BT.

[0158] (Item 11) A battery stand 50 according to any one of items 1 to 10, comprising a force transmission member 72 disposed between the fixing member 53 and the battery BT, which transmits the pressing force from the fixing member 53 to the battery BT.

[0159] According to the battery stand 50 related to item 11, the force transmitted to the force transmission member 72 can be appropriately applied to the battery BT as a pressing force.

[0160] (Item 12) The battery stand 50 according to any one of items 1 to 11, wherein the fixing member 53 directly or indirectly contacts the front upper corner portion 92 of the battery BT and applies a rearward and downward pressing force to the battery BT.

[0161] According to the battery stand 50 in item 12, by directly or indirectly transmitting force from the fixing member 53 to the front upper corner 92 of the battery BT, it is possible to appropriately apply pressing force to the battery BT with a simple device configuration that does not use a force transmission member 72 or a clamping member 69.

[0162] (Item 13) A work machine 1 equipped with a battery stand 50 as described in any of items 1 to 12.

[0163] According to the work machine 1 related to item 13, it is possible to realize a work machine 1 that produces the unique effects described above.

[0164] While embodiments of the present invention have been described above, the embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than the foregoing description, and all modifications within the meaning and scope of equivalents of the claims are intended to be included. [Explanation of Symbols]

[0165] 1. Work machine 50 battery stands 52 Retaining member 53 Fixing member 53a 1st fixture 53b Second fixture 54 Mounting platform 55 Regulating members 63 Slope 65 Screw grooves 67 Pressing member 72 Force transmission member 74 Slope 77 Fastening Members 90 Connection part 91 Rib member 92 Front upper corner BT Battery

Claims

1. A mounting platform for the battery, A restricting member is positioned on the rear side of the battery and restricts the movement of the battery to the rear. The device comprises a fixing member that is positioned above or above the regulating member and extends across the front of the battery, and that secures the battery, The fixing member comprises a first fixing device positioned on the upper side of the battery, a second fixing device positioned on the front side of the battery, and a connecting portion connecting the first fixing device and the second fixing device. The connecting portion comprises an inclined portion provided on one of the first and second fasteners, which is inclined in a direction that moves closer to the rear surface of the battery as it extends upward, and a holding member that adjustably holds the connecting position of the other of the first and second fasteners with respect to the inclined portion. The first fixing device has one end connected to the upper or upper part of the restricting member, and the other end positioned above the front of the battery. The second fixing device has the inclined portion of the connecting part formed at one end, and the other end is connected to the mounting base described above. The second fixing device is a battery stand that is bent in the middle and has an inclined portion that extends in the direction of inclination from the middle to the end.

2. The aforementioned restricting member extends from the aforementioned mounting base upwards above the battery, The one end of the first fixing device is connected to the upper part of the restricting member so as to be able to swing vertically, The battery stand according to claim 1, wherein the other end of the second fixing device is connected to the aforementioned stand so as to be able to swing in the front-rear direction of the battery.

3. The battery stand according to claim 1, wherein the holding member moves along the inclined portion, thereby changing the connection position of the other of the first and second fasteners with respect to the inclined portion.

4. A mounting platform for mounting a battery, A restricting member is positioned on the rear side of the battery and restricts the movement of the battery to the rear. The device comprises a fixing member that is positioned above or above the regulating member and extends across the front of the battery, and that secures the battery, The fixing member comprises a first fixing device positioned on the upper side of the battery, a second fixing device positioned on the front side of the battery, and a connecting portion connecting the first fixing device and the second fixing device. The connecting portion comprises an inclined portion provided on one of the first and second fasteners, which is inclined in a direction that moves closer to the rear surface of the battery as it extends upward, and a holding member that adjustably holds the connecting position of the other of the first and second fasteners with respect to the inclined portion. The holding member moves along the inclined portion, thereby changing the connection position of the other of the first and second fasteners relative to the inclined portion. The other of the first and second fasteners has an inclined surface formed thereon that is inclined in a direction intersecting the inclination direction, The holding member, by contacting the inclined surface, holds the other connection position of the first and second fixing devices relative to the inclined portion.

5. Screw grooves are formed in the inclined portion. The battery stand according to claim 1 or 4, wherein the retaining member is a fastening member that screws into the screw groove.

6. The battery stand according to claim 1 or 4, wherein the fixing member is located on the battery placed on the stand described above, on the inside in the width direction.

7. The battery stand according to claim 6, wherein the fixing member is provided on the inside in the width direction of the battery placed on the stand described above.

8. The system includes clamp members positioned between the top surface of the battery and the first fixing device, and between the front surface of the battery and the second fixing device. The battery stand according to claim 1 or 4, wherein the clamp member presses the upper surface of the battery downward by the first fixing device and presses the front surface of the battery backward by the second fixing device.

9. The battery stand according to claim 1 or 4, further comprising a force transmission member disposed between the fixing member and the battery, which transmits the pressing force from the fixing member to the battery.

10. The battery stand according to claim 1 or 4, wherein the fixing member directly or indirectly contacts the front upper corner of the battery and applies a rearward and downward pressing force to the battery.

11. A work machine equipped with a battery stand according to claim 1 or 4.

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