WO2022209955A1

WO2022209955A1 - Battery-mount device and bicycle provided with same

Info

Publication number: WO2022209955A1
Application number: PCT/JP2022/012264
Authority: WO
Inventors: 貴浩板垣
Original assignee: ヤマハ発動機株式会社
Priority date: 2021-03-31
Filing date: 2022-03-17
Publication date: 2022-10-06
Also published as: JPWO2022209955A1

Abstract

A battery-mount device (S) includes a battery (20) and a receiving member (30). The battery (20) includes a fitting part (21) on a lower portion thereof. The receiving member (30) includes a terminal (32) and a receiving housing (31). The receiving housing (31) includes a left wall part (31A) positioned to the left with respect to the fitting part (21) fitted to the receiving housing (31), and a front wall part (31B) and a back wall part (31B) positioned in a front-back direction with respect to the fitting part (21). The fitting part (21) includes an engaged part (23) on a left face (21a) that faces the left wall part (31A). The front wall part (31B) and the back wall part (31C) include, on inner surfaces thereof, a guide face (34) that guides the fitting part (21) to the left. Due to the foregoing, the battery (20) can be smoothly mounted on a bicycle.

Description

Battery-equipped device and bicycle equipped with it

The present disclosure relates to a battery-equipped device and a bicycle equipped with the same.

The electric bicycle is equipped with a detachable battery. The bicycle disclosed in Japanese Unexamined Patent Application Publication No. 2013-103581 has a receiving member having a terminal on the rear side of the saddle post (the "receiving member" is referred to as a battery mounting portion in Japanese Unexamined Patent Application Publication No. 2013-103581. ing.). In the process of attaching the battery to the receiving member, the battery is first placed on the receiving member in a posture tilted to the left, and then moved to a vertical posture. By doing so, the terminals of the battery and the terminals of the receiving member are electrically connected.

In Japanese Patent Application Laid-Open No. 2013-103581, the battery has support shafts on its lowermost front and rear surfaces. The receiving member has grooves in the front and rear sides of the left portion thereof into which the support shafts of the battery are fitted. In the step of attaching the battery to the receiving member, the support shaft of the battery is fitted into the groove of the receiving member, and then the battery is moved to a vertical position. At this time, the support shaft rotates within the groove. In this structure, it is necessary to fit the support shaft of the battery into the groove of the receiving member, which may be difficult to perform. For example, in a dark place, it is difficult to see the support shaft of the battery and the groove of the receiving member, making it difficult to align them.

An object of the present disclosure is to provide a battery mounting device and a bicycle that make it possible to mount the battery on the bicycle more smoothly.

(1) A battery-mounted device proposed in the present disclosure has a battery and a receiving member. The battery has a fitting portion at its lower portion. The receiving member has a terminal electrically connected to the battery, and a housing into which the fitting portion of the battery can be fitted. The battery has a connection posture in which the fitting portion is fitted in the housing and is electrically connected to the terminal, and a connection posture in which the battery is inclined in a first direction with respect to the connection posture and is electrically connected to the terminal. It can be moved between an attachment/detachment posture in which the connection is canceled, and can be removed from and attached to the receiving member in the attachment/detachment posture. The housing includes a first wall portion positioned in the first direction with respect to the fitting portion fitted in the housing, and a wall portion extending in a second direction intersecting the first direction. and two second wall portions formed on opposite sides between which the fitting portion is arranged. The fitting portion has an engaged portion on a surface facing the first wall portion. The first wall portion has an engaging portion that engages with the engaged portion while the battery moves from the attachment/detachment posture to the connection posture. The second wall portion has, on its inner surface, a guide surface that guides the fitting portion in the first direction. According to this battery mounting device, the battery can be mounted on the bicycle with a simpler work than the conventional structure.

(2) In the battery mounting device of (1), the first wall and the two second walls may be connected to each other. This structure can increase the strength of the first wall. In this structure, the edge of the first wall may be connected to the second wall over its entirety, or only part of the edge of the first wall is connected to the second wall. good too.

(3) In the battery-mounted device of (1) or (2), the height of the first wall may be lower than the height of the two second walls. According to this structure, the work of mounting the battery on the receiving member can be performed more smoothly.

(4) In the battery mounting device according to any one of (1) to (3), the housing may have a third wall formed on the side opposite to the first wall. This structure can increase the strength of the second wall.

(5) In the battery mounting device of (4), the fitting portion has a guided portion that is guided along the guide surface, the fitting portion is positioned on the upper edge of the third wall portion, In addition, the fitting portion does not have to contact the terminal while the guided portion is positioned on the guide surface. According to this structure, the terminal can be protected by the third wall portion and the guide surface.

(6) In the battery-mounted device described in (4) or (5), the third direction is opposite to the first direction, and the terminal is located in the third direction relative to the guide surface. You can According to this structure, the terminal can be easily protected by the third wall portion and the guide surface.

(7) In the battery-mounted device according to any one of (1) to (6), the upper part of the guide surface faces the first direction, or is inclined upward in the first direction. may have a side facing the According to this structure, the operation of inserting the fitting portion of the battery between the guide surface and the first wall portion can be performed more smoothly.

(8) In the battery mounting device according to any one of (1) to (7), the engaging portion formed on the first wall portion is a convex portion protruding toward the inside of the housing. may contain. The engaged portion formed in the fitting portion may include a convex portion protruding toward the first wall portion.

(9) In the battery mounting device described in (8), the upper surface of the convex portion of the first wall portion may have a slope that descends toward the inside of the housing. According to this structure, the fitting portion of the battery can be guided toward the inside of the housing by the slope formed on the projection of the first wall portion.

(10) A bicycle proposed in the present disclosure may have the battery-mounted device according to any one of (1) to (9).

The bicycle proposed in the present disclosure may be an electric bicycle that runs by combining the force applied to the pedals by the occupant and the force output from the electric motor, or may run only by the force applied to the pedals by the occupant. Alternatively, it may be an electric bicycle that can run only by the force output from the electric motor.

1 is a left side view of an example bicycle proposed in the present disclosure; FIG. FIG. 2 is a perspective view of the bicycle shown in FIG. 1, showing a battery mounting device composed of a battery and a receiving member; FIG. 2 is a perspective view of a battery included in the bicycle shown in FIG. 1; 3B is a rear view of the lower portion of the battery shown in FIG. 3A; FIG. This "rear view" is a view facing the rear of the bicycle with the battery mounted on the bicycle. It is a perspective view of a receiving member. FIG. 4B is a cross-sectional view of the receiving member taken along line IVb-IVb shown in FIG. 4A; FIG. 10 is a diagram showing the battery and the receiving member in the connected posture; FIG. 10 is a diagram showing a first example of a process of mounting the battery on a receiving member; FIG. 10 is a diagram showing a first example of a process of mounting the battery on a receiving member; FIG. 10 is a diagram showing a first example of a process of mounting the battery on a receiving member; FIG. 10 is a diagram showing a first example of a process of mounting the battery on a receiving member; FIG. 10 is a diagram showing a second example of the process of mounting the battery on the receiving member; FIG. 10 is a diagram showing a second example of the process of mounting the battery on the receiving member; FIG. 10 is a diagram showing a first example of a state in which the battery is interfering with the receiving member; FIG. 10 is a diagram showing a second example of a state in which the battery interferes with the receiving member;

An example of a bicycle and a battery-equipped device proposed in the present disclosure will be described below. In this specification, the bicycle 1 and the battery-equipped device S shown in FIG. 1 and the like will be described as an example. In FIG. 1, directions indicated by Y1 and Y2 are referred to as forward and backward, respectively, and directions indicated by Z1 and Z2 are referred to as upward and downward, respectively. The directions indicated by X1 and X2 shown in FIG. 5 are called right and left, respectively.

[Whole vehicle]
As shown in FIG. 1, a bicycle 1 has a front fork 3, a front wheel 2 supported by the lower end of the front fork 3, and a handlebar 4 connected to the front fork 3 via a steering shaft. ing. Bicycle 1 has a saddle 6 . A saddle 6 is supported by a saddle post 7a.

A drive unit 10 is arranged below the saddle post 7a. The drive unit 10 has an electric motor and a speed reduction mechanism inside. The rotation of the electric motor is decelerated by a deceleration mechanism and transmitted to the rear wheel 8 through a power transmission mechanism (not shown) such as a chain, belt and shaft. The drive unit 10 has a crankshaft 10a. A crank arm 11 is attached to both ends of the crank shaft 10a, and a pedal 9 is attached to the end of the crank arm 11. As shown in FIG. The torque generated in the crankshaft 10a by the force applied to the pedal 9 and the torque of the electric motor are transmitted to the rear wheels 8 through the power transmission mechanism.

[Overview of battery and receiving member]
As shown in FIG. 1, a battery 20 is arranged behind the saddle post 7a. The electric motor is driven by power supplied from the battery 20 . A receiving member 30 is arranged above the drive unit 10 . The battery 20 is arranged above the receiving member 30 . A battery mounting device S is configured by the battery 20 and the receiving member 30 .

The positions of the battery 20 and the receiving member 30 are not limited to the example shown in the drawing. For example, the battery 20 and the receiving member 30 may be arranged along a down tube 7c extending rearwardly and downwardly from the head tube 7b of the frame 7 of the bicycle 1. In this case, down tube 7 c may be formed to match the shape of battery 20 . For example, the down tube 7c may extend straight without being curved as shown in FIG.

As shown in FIG. 3B, the battery 20 has a fitting portion 21 at its lower portion. A plurality of terminal holes 21c are formed in the lower surface 21b of the fitting portion 21. As shown in FIG. The fitting portion 21 has a plurality of terminals 22 . These are accommodated inside the plurality of terminal holes 21c. The fitting portion 21 has a terminal holder 21f. The terminal holder 21f is formed with a plurality of terminal holes 21c that are aligned in the front-rear direction and open downward. A terminal 22 is accommodated in each of the terminal holes 21c.

As shown in FIG. 3A, the battery 20 has a battery main body 29 above the fitting portion 21 . Battery cells are housed in the battery body 29 . The width of the battery body 29 in the left-right direction may be larger than the width of the fitting portion 21 in the left-right direction. The battery 20 has a handle portion 27 on the upper portion of the battery body 29 .

As shown in FIG. 4A , the receiving member 30 has a plurality of terminals 32 electrically connected to the terminals of the battery 20 and a receiving housing 31 . Terminals 32 are held in bottom portion 31E of receiving housing 31 and extend upwardly from bottom portion 31E. The plurality of terminals 32 are arranged in the front-rear direction. Each terminal 32 has a plate shape and is arranged in a posture along the left-right direction. That is, each terminal 32 is arranged in parallel with the movement of the battery 20 (movement in the left-right direction), which will be described later. The terminals 22 of the battery 20 are formed, for example, so as to sandwich the terminals 32 in the front-rear direction.

The receiving housing 31 has a bottom portion 31E and a plurality of

wall portions

31A, 31B, 31C, and 31D formed around the bottom portion 31E. The fitting portion 21 of the battery 20 can be fitted inside the receiving housing 31 .

The battery 20 can move between a connection posture (see FIGS. 5 and 6D) and a mounting/dismounting posture (see FIGS. 6A to 6C, FIGS. 7A and 7B) inclined to the left of the connection posture. When the battery 20 is in the connected posture, the fitting portion 21 is fitted inside the receiving housing 31 and the terminals 22 of the battery 20 are electrically connected to the terminals 32 of the receiving member 30 . The connection posture may be, for example, a posture along the vertical direction of the bicycle 1 (Z1-Z2 direction). When the battery 20 is in the attachment/detachment posture, the electrical connection between the

terminals

22 and 32 is broken, and the battery 20 can be removed from the receiving member 30 (separated upward from the receiving member 30) or attached to the receiving member 30. be. That is, the battery 20 can be attached/detached to/from the receiving member 30 in an attitude inclined to the left with respect to the connection attitude.

The battery-equipped device S may have a lock portion 41 (see FIG. 2). The lock portion 41 is attached to, for example, the saddle post 7a. The battery 20 may have a locked portion 28 . In this case, the connection posture is also a posture in which the locked portion 28 can be locked to the locking portion 41 . Locking/unlocking of the locked portion 28 to the locking portion 41 may be performed by key operation.

As shown in FIG. 2, the frame 7 has left and right stays 7d. The stay 7d extends diagonally rearward and downward from the saddle post 7a and is connected to the rear end of a rear arm 7e (see FIG. 1) supporting the axle of the rear wheel 8. As shown in FIG. The battery 20 in the connected posture is arranged below the stay 7d. The battery 20 can be removed from the receiving member 30 or attached to the receiving member 30 in a posture tilted to the left with respect to the connection posture. Therefore, the width of the battery main body 29 in the left-right direction can be increased without depending on the interval between the left and right stays 7d. As shown in FIG. 5, the width of the battery body 29 in the left-right direction may be larger than the left and right stays 7d.

[Receiving member]
As shown in FIG. 4A, the receiving housing 31 has a left wall portion 31A, a front wall portion 31B, a rear wall portion 31C, and a right wall portion 31D. The left wall portion 31</b>A is a wall positioned to the left of the fitting portion 21 when the fitting portion 21 of the battery 20 is fitted in the receiving housing 31 . The right wall portion 31D is a wall formed on the opposite side of the left wall portion 31A, that is, a wall located on the right side of the fitting portion 21 . The front wall portion 31B is a wall located in front of the fitting portion 21, and the rear wall portion 31C is a wall located behind the fitting portion 21. As shown in FIG. The left wall portion 31A and the right wall portion 31D are formed on opposite sides in the left-right direction, and the fitting portion 21 is arranged therebetween. The front wall portion 31B and the rear wall portion 31C are formed on opposite sides in the front-rear direction, and the fitting portion 21 is arranged therebetween.

As shown in FIG. 4A, the front wall portion 31B, the rear wall portion 31C, and the right wall portion 31D may have upper edge guides 31e, 31f, and 31g at their upper edges. The upper edge guides 31e, 31f, and 31g may be formed like flanges. That is, the upper edge guide 31e of the front wall portion 31B may protrude obliquely upward and forward. Similarly, the upper edge guide 31f of the rear wall portion 31C may project diagonally upward and rearward, and the upper edge guide 31g of the right wall portion 31D may project diagonally upward and rightward. The upper edge guides 31 e , 31 f , 31 g can guide the fitting portion 21 inside the receiving housing 31 when fitting the fitting portion 21 of the battery 20 inside the receiving housing 31 . The upper edge of the left wall portion 31A may not be formed into a flange shape.

The fitting portion 21 has an engaged portion 23 (see FIG. 3) on the left surface 21a of the receiving housing 31 facing the left wall portion 31A. The left wall portion 31A has an engaging portion 33 (see FIG. 4A). In the process of moving the battery 20 from the attachment/detachment posture to the connection posture (the process of moving from the postures of FIGS. 6A to 6C to the posture of FIG. 6D, and the process of moving from the postures of FIGS. 7A and 7B to the posture of FIG. 6D), The engaging portion 33 engages with the engaged portion 23 . The engaging portion 33 restricts the upward movement of the engaged portion 23 by engaging with the engaged portion 23 , and causes the engaged portion 23 to function as a fulcrum for the movement of the battery 20 . As a result, the attaching/detaching operation of the battery 20 can be performed smoothly. For example, even when a large frictional force is generated between the terminals 32 of the receiving member 30 and the terminals 22 of the battery 20, the battery 20 can be attached and detached smoothly. The process of moving the battery 20 from the attachment/detachment posture to the connection posture will be described later in detail with reference to FIGS. 6A to 6D, 7A, and 7B.

As shown in FIG. 4A, the front edge and rear edge of the left wall portion 31A are connected to the front wall portion 31B and the rear wall portion 31C, respectively. Thereby, the strength of the left wall portion 31A can be increased. As a result, for example, the deformation of the left wall portion 31A caused by the force acting on the engaging portion 33 from the engaged portion 23 is suppressed, and the left wall portion 31A caused by the collision of the fitting portion 21 with the left wall portion 31A is suppressed. deformation can be suppressed. The front edge of the left wall portion 31A may be connected to the front wall portion 31B over its entirety, or may be connected to the front wall portion 31B only partially. Similarly, the rear edge of the left wall portion 31A may be connected to the rear wall portion 31C over its entirety, or may be connected to the rear wall portion 31C only partially.

The front edge and rear edge of the right wall portion 31D may also be connected to the front wall portion 31B and the rear wall portion 31C, respectively. Thereby, the strength of the entire receiving housing 31 can be increased. The front edge of the right wall portion 31D may be connected to the front wall portion 31B over its entirety, or may be connected to the front wall portion 31B only partially. Similarly, the rear edge of the right wall portion 31D may be connected to the rear wall portion 31C over its entirety, or may be connected to the rear wall portion 31C only partially.

Also, the wall portions 31A to 31D do not have to be plate-like portions. A plurality of holes may be formed in each of the walls 31A to 31D for the purpose of weight reduction, for example. As another example, each of the walls 31A to 31D may be composed of a first portion extending in the lateral direction and a plurality of second portions extending in the height direction and arranged in the lateral direction. . In this case, each of the wall portions 31A to 31D may have one or more first portions. An opening may be formed in a region surrounded by the first portion and the second portion.

As shown in FIG. 4B, the positions of the upper edges of the front wall portion 31B, the rear wall portion 31C, and the right wall portion 31D are higher than the upper ends of the terminals 32 . According to this, the terminal 32 can be protected by the

wall portions

31B, 31C, and 31D. On the other hand, the left wall portion 31A on which the engaging portion 33 is formed is lower than the

other wall portions

31B, 31C, and 31D. As a result, unintended interference between the left wall portion 31A and the battery 20 can be prevented, and the work of attaching the battery 20 to the receiving member 30 can be facilitated.

As shown in FIG. 5, the center position of the receiving member 30 in the left-right direction may be shifted to the left with respect to the edge plane Cp passing through the center of the bicycle 1 in the left-right direction. This further facilitates the work of attaching the battery 20 to the receiving member 30 .

As shown in FIG. 4B, the position of the terminal 32 of the receiving member 30 is separated rightward from the left wall portion 31A. More specifically, the terminal 32 is positioned to the right of the center of the receiving member 30 in the left-right direction. This makes it easy to suppress interference between the fitting portion 21 and the terminals 32 in the process of moving the battery 20 from the attachment/detachment posture to the connection posture.

[Details of Engaging Portion and Engaged Portion]
As shown in FIG. 4A, the engaging portion 33 of the receiving member 30 includes a convex portion protruding from the left wall portion 31A toward the inside of the receiving member 30, that is, rightward. In the illustrated example, the engaging portion 33 has a first protrusion 33a protruding rightward from the left wall portion 31A. The first convex portion 33a is formed at a position lower than the upper edge of the left wall portion 31A. The first protrusion 33a may have an eave shape extending in the front-rear direction.

Further, the engaging portion 33 may have a second convex portion 33b that protrudes from the upper portion of the left wall portion 31A and is formed above the first convex portion 33a. The second convex portion 33b has a guide slope 33c as shown in FIG. 4B. The guide slope 33c extends obliquely downward and rightward from the upper edge of the left wall portion 31A. The lower edge of the guide slope 33c is connected to the right edge of the first protrusion 33a. As shown in FIGS. 6A to 6D, the guide slope 33c can guide the fitting portion 21 to the inside of the housing 31 in the process of moving the battery 20 from the attachment/detachment posture to the connection posture.

As shown in FIG. 4A, the engaging portion 33 may have a plurality of second convex portions 33b arranged in the front-rear direction. Alternatively, the engaging portion 33 may have only one second protrusion 33b extending in the front-rear direction along the first protrusion 33a.

As shown in FIG. 4B, the guide slope 33c may be composed of two

slopes

33d and 33e with different angles. The slope 33e is formed at a position lower than the slope 33d and extends obliquely downward from the slope 33d. The angle of the slope 33e with respect to the horizontal plane may be greater than the inclination of the slope 33d with respect to the horizontal plane.

The structure of the guide slope 33c is not limited to the example shown in the drawing. The guide slope 33c may be curved as a whole. In still another example, the angle of the guide slope 33c may be uniform over the entire guide slope 33c.

As shown in FIG. 4A, the engaging portion 33 may have ribs 33g. The rib 33g protrudes from the lower portion of the left wall portion 31A and extends vertically between the first convex portion 33a and the bottom portion 31E. The rib 33g supports the first protrusion 33a. The strength of the engaging portion 33 can be increased by the rib 33g. The engaging portion 33 may have a plurality of ribs 33g separated in the front-rear direction.

As shown in FIG. 3A, the engaged portion 23 of the battery 20 may have a convex portion 23a. In the process of moving the battery 20 from the attachment/detachment posture to the connection posture, the projection 23a fits into a space (recess) formed below the first projection 33a (see FIG. 4A) of the engaging portion 33 . As a result, the upward movement of the engaged portion 23 is restricted by the first convex portion 33a.

As shown in FIG. 3A, the engaged portion 23 may have three convex portions 23a arranged in the front-rear direction. When the battery 20 is in the connected posture, the rib 33g (see FIG. 4A) of the engaging portion 33 may fit into the groove between the two adjacent protrusions 23a.

The distance L2 between the right end of the engaging portion 33 of the receiving member 30 and the right wall portion 31D (the distance along the horizontal plane, see FIG. 4B) is It may be smaller than the distance L5 (the distance along the horizontal plane, see FIG. 3B) from the right surface 21d of the portion 21. According to this dimensional relationship, attaching the battery 20 to the receiving member 30 in the vertical direction is restricted.

[Guide surface]
As shown in FIGS. 4A and 4B, the front wall portion 31B and the rear wall portion 31C have guide surfaces 34 on their inner surfaces. In the process of moving the battery 20 from the attachment/detachment posture to the connection posture (the process of moving from the postures of FIGS. 6A to 6C to the posture of FIG. 6D, and the process of moving from the postures of FIGS. 7A and 7B to the posture of FIG. 6D), The guide surface 34 guides the fitting portion 21 to the left. Even when the fitting portion 21 of the battery 20 is separated rightward from the left wall portion 31A of the receiving housing 31, the fitting portion 21 is guided toward the left wall portion 31A by the guide surface 34, and the engaged portion 23 is guided toward the left wall portion 31A. can engage the engaging portion 33 . This facilitates the work of mounting the battery 20 on the receiving member 30 .

As shown in FIG. 4A, the left portion 31b of the inner surface of the front wall portion 31B and the rear wall portion 31C is recessed relative to the right portion 31c. A step caused by the recess functions as a guide surface 34 .

As shown in FIG. 3B, the front and rear surfaces of the fitting portion 21 of the battery 20 (surfaces facing the walls 31B and 31C on which the guide surfaces 34 described above are formed) are provided with a guided portion 24 on the left. have. The guided portion 24 bulges relatively to the front and rear right portions 21 e of the fitting portion 21 . The guided portion 24 has a guided surface 24a facing rightward.

When the battery 20 is in the attachment/detachment posture (FIGS. 6A to 6C, FIGS. 7A and 7B) and the connection posture (FIG. 6D), the guided portion 24 is positioned between the front wall portion 31B and the left portion 31b (FIG. 4A) of the rear wall portion 31C. ) and positioned to the left of the guide surface 34 .

As shown in FIG. 4B, the guide surface 34 has an upper portion 34a that is separated rightward from the left wall portion 31A. An upper portion 34a of the guide surface 34 faces obliquely to the left and upward. That is, the upper portion 34a is slanted so that the vertical line H1 is directed obliquely to the left and upward. With this shape of the guide surface 34, the operation of fitting the guided portion 24 of the battery 20 between the upper portion 34a of the guide surface 34 and the left wall portion 31A can be performed smoothly.

The guide surface 34 extends obliquely downward and leftward from the upper portion 34a, then curves and extends leftward. Accordingly, when the guided portion 24 of the fitting portion 21 hits the upper portion 34a of the guide surface 34, the fitting portion 21 is guided toward the left wall portion 31A. In the illustrated example, the lower portion 34b of the guide surface 34 faces upward. The left end of the guide surface 34 is connected to the left wall portion 31A.

The shape of the guide surface 34 is not limited to the example shown in the drawing. For example, upper portion 34a may face straight left. That is, the vertical line H1 of the upper portion 34a may be parallel to the left-right direction. As another example, the lower portion 34b of the guide surface 34 may also face obliquely to the left and upward, like the upper portion 34a. That is, the guide surface 34 does not have to have a curved portion. As another example, the left end of the guide surface 34 may not be connected to the left wall portion 31A.

The shape of the guided surface 24 a of the battery 20 may correspond to the shape of the guide surface 34 . That is, as shown in FIG. 5, the guided surface 24a may extend along the guide surface 34 when the battery 20 is in the connected posture. As shown in FIG. 3B, the upper portion 24b of the guided surface 24a extends obliquely downward and leftward, then curves and extends leftward. A lower portion 24c of the guided surface 24a faces downward.

The shape of the guided surface 24a is not limited to the example shown in the drawing. A part of the guided surface 24 a does not have to be along the guide surface 34 . For example, the upper portion 24b (see FIG. 3B) of the guided surface 24a may extend straight upward.

As shown in FIG. 8, when the battery 20 is to be mounted on the receiving member 30, the fitting portion 21 of the battery 20 is positioned above the upper edge guide 31g of the right wall portion 31D, and the guided portion 24 of the battery 20 is positioned. may be positioned above the guide surface 34 of the receiving member 30 . In this state, the fitting portion 21 and the terminal 32 do not come into contact with each other. In other words, the right wall portion 31D, the guide surface 34, and the terminals 32 are arranged or formed so that such contact does not occur. Of the straight lines connecting the upper edge guide 31g of the right wall portion 31D and points on the guide surface 34 (for example, straight lines L3 and L4 shown in FIG. 8), the straight line closest to the terminal 32 is is also located above.

In the example shown in FIG. 8, the front end 24d of the guided surface 24a of the battery 20 is positioned above the lower portion 34b of the guide surface 34. In the example shown in FIG. In this state, the upper end of the terminal 32 is lower than the lower surface 21 b of the fitting portion 21 . On the other hand, when the fitting portion 21 is positioned on the upper edge guide 31g of the right wall portion 31D and the guided surface 24a is positioned on the guide surface 34, the upper end of the terminal 32 is positioned on the battery. Interference with the fitting portion 21 may be avoided by being positioned inside the terminal hole 21c of the terminal hole 20 .

As shown in FIG. 4B, the terminal 32 of the receiving member 30 is positioned to the right of the guide surface 34. As shown in FIG. More specifically, the terminal 32 is positioned to the right of the upper end (right end) of the guide surface 34 extending obliquely upward. This facilitates prevention of interference between the terminal 32 and the fitting portion 21 of the battery 20 .

As shown in FIG. 9, when the battery 20 is to be mounted on the receiving member 30, the inclination of the battery 20 is smaller than an appropriate angle. The left end of the mating portion 23 interferes with it, and the lower right edge of the fitting portion 21 may interfere with the inner surface of the right wall portion 31D. Even in this state, the fitting portion 21 and the terminal 32 do not come into contact with each other. In other words, the right wall portion 31D, the guide surface 34, and the terminals 32 are arranged or formed so that such contact does not occur.

In the example shown in FIG. 9, the upper end of the terminal 32 of the receiving member 30 is located inside the terminal hole 21c of the battery 20, and interference between the terminal 32 and the fitting portion 21 is avoided. Unlike this, the right end of the engaging portion 33 of the receiving housing 31 and the left end of the engaged portion 23 of the battery 20 interfere with each other, and the lower right edge of the fitting portion 21 interferes with the inner surface of the right wall portion 31D. The upper end of the terminal 32 may be lower than the lower surface 21b of the fitting portion 21 in the state of being held.

[Step of attaching battery to receiving member]
An example of work for mounting the battery 20 on the receiving member 30 will be described. As shown in FIG. 6A , the battery 20 is tilted to the left and placed in the mounting/dismounting posture, and the engaged portion 23 of the battery 20 is placed on the guide slope 33 c of the left wall portion 31 A of the housing 31 . As shown in FIG. 6B , when the position of the battery 20 is lowered, the engaged portion 23 moves downward along the guide slope 33 c of the engaging portion 33 . The guided portion 24 of the battery 20 is arranged on the lower portion 34b of the guide surface 34 formed on the front wall portion 31B and the rear wall portion 31C. After that, as shown in FIG. 6C, when the posture of the battery 20 is brought closer to the connection posture, that is, when the battery 20 is brought closer to the posture along the vertical direction of the bicycle 1, the engaged portion 23 is moved to the engaging portion 33 (first The protrusions 33a, see FIG. 4A) enter below and they engage. At this time, the posture of the battery 20 changes with the engaged portion 23 as a fulcrum. Also, the terminal 32 of the receiving member 30 enters the terminal hole 21 c of the battery 20 . As a result, as shown in FIG. 6D, the battery 20 reaches the connection posture, and the terminal 22 of the battery 20 and the terminal 32 of the receiving member 30 are connected.

Another example of the work of attaching the battery 20 to the receiving member 30 will be described. As shown in FIG. 7A , the battery 20 is tilted to the left and placed in the attachment/detachment posture, and the guided portion 24 of the battery 20 is placed on the upper portion 34 a of the guide surface 34 of the receiving housing 31 . When the battery 20 is moved leftward, the guided portion 24 moves along the guide surface 34 . The guided portion 24 reaches the lower portion 34 b of the guide surface 34 , and the left surface 21 a of the fitting portion 21 contacts the engaging portion 33 of the receiving housing 31 . Thereafter, the same movements as those described in Figures 6C and 6D may be performed. That is, as shown in FIG. 6C, when the posture of the battery 20 is brought closer to the connection posture, the engaged portion 23 enters the lower side of the engaging portion 33 and they are engaged. At this time, the posture of the battery 20 changes with the engaged portion 23 as a fulcrum. Also, the terminal 32 of the receiving member 30 enters the terminal hole 21 c of the battery 20 . As a result, as shown in FIG. 6D, the battery 20 reaches the connection posture, and the terminal 22 of the battery 20 and the terminal 32 of the receiving member 30 are connected.

As shown in FIGS. 6A and 7A, according to the structures of the battery 20 and the receiving member 30, when the battery 20 is mounted on the receiving member 30, the battery 20 can be positioned freely in the left-right direction. As a result, the mounting work of the battery 20 can be performed smoothly.

[summary]
(1) As described above, the battery-equipped device S proposed in the present disclosure has the battery 20 and the receiving member 30 . The battery 20 has a fitting portion 21 at its lower portion. The receiving member 30 has a terminal 32 electrically connected to the battery 20 and a receiving housing 31 into which the fitting portion 21 of the battery 20 can be fitted. The battery 20 has a connection posture in which the fitting portion 21 is fitted in the receiving housing 31 and is electrically connected to the terminal 32, and a connection posture in which the battery 20 is inclined to the left with respect to the connection posture, and the electrical connection with the terminal 32 is not established. It can be moved to and from the released attachment/detachment posture, and can be removed from and attached to the receiving member 30 in the attachment/detachment posture. The receiving housing 31 has a left wall portion 31A located on the left side of the fitting portion 21 fitted in the receiving housing 31, and a front wall portion located in the front-rear direction with respect to the fitting portion 21. 31B and a rear wall portion 31B. The fitting portion 21 has an engaged portion 23 on a left surface 21a facing the left wall portion 31A. The left wall portion 31A has an engaging portion 33 that engages with the engaged portion 23 in the process of moving the battery 20 from the attachment/detachment posture to the connection posture. The front wall portion 31B and the rear wall portion 31C have guide surfaces 34 on their inner surfaces for guiding the fitting portion 21 to the left. According to this battery mounting device, the battery can be mounted on the bicycle with a simpler work than the conventional structure.

(2) The left wall portion 31A is connected to the front wall portion 31B and the rear wall portion 31C. This structure can increase the strength of the left wall portion 31A.

(3) The left wall portion 31A is lower in height than the front wall portion 31B and the rear wall portion 31C. According to this structure, the operation of mounting the battery 20 on the receiving member 30 can be performed more smoothly.

(4) The receiving housing 31 may have a right wall portion 31D formed on the opposite side of the left wall portion 31A. This structure can increase the strength of the front wall portion 31B and the rear wall portion 31C.

(5) The fitting portion 21 has a guided portion 24 guided along the guide surface 34 , the fitting portion 21 is positioned on the upper edge of the right wall portion 31</b>D, and the guided portion 24 is located on the guide surface 34 . In the upward position, the fitting portion 21 does not contact the terminals 32 . According to this structure, the terminal 32 can be protected by the right wall portion 31D and the guide surface 34. FIG.

(6) The terminal 32 of the receiving member 30 is positioned to the right of the guide surface 34 . According to this structure, the terminal 32 can be easily protected by the right wall portion 31D and the guide surface .

(7) The upper portion 34a of the guide surface 34 has a leftward facing surface or a leftward and upward oblique surface. According to this structure, the operation of inserting the guided portion 24 of the battery 20 between the guide surface 34 and the left wall portion 31A can be performed more smoothly.

(8) The engaging portion 33 formed on the left wall portion 31A may include

convex portions

33a and 33b protruding toward the inside of the receiving housing 31. The engaged portion 23 formed in the fitting portion 21 includes a convex portion 23a projecting toward the left wall portion 31A.

(9) The upper surface of the convex portion 33b of the left wall portion 31A has a guide slope 33c that descends toward the inside of the receiving housing 31. According to this structure, the fitting portion 21 of the battery 20 can be received and guided toward the inside of the housing 31 by the guide slope 33c formed on the convex portion 33b of the left wall portion 31A.

[Modification]
The bicycle and the battery-equipped device proposed in the present disclosure are not limited to the bicycle 1 and the battery-equipped device S (the battery 20 and the receiving member 30) described above, and various modifications may be made.

For example, in contrast to the bicycle 1, the battery 20 may be able to be removed from or attached to the receiving member 30 in an orientation tilted to the right with respect to the connected orientation. In this case, the lateral positional relationship of the parts of the receiving member 30 and the battery 20 may be opposite to that of the example of the bicycle 1 in the lateral direction.

Claims

a battery having a fitting portion at the bottom;
a receiving member having a terminal electrically connected to the battery and a housing into which the fitting portion of the battery can be fitted;
The battery has a connection posture in which the fitting portion is fitted in the housing and is electrically connected to the terminal, and a connection posture inclined in a first direction with respect to the connection posture and electrically connected to the terminal. the battery can be moved between an attachment/detachment posture in which the connection is canceled, and the battery can be removed from and attached to the receiving member in the attachment/detachment posture;
The housing includes a first wall portion positioned in the first direction with respect to the fitting portion fitted in the housing, and a wall portion extending in a second direction intersecting the first direction. two second wall portions formed on opposite sides between which the fitting portion is arranged;
The fitting portion has an engaged portion on a surface facing the first wall portion,
the first wall portion has an engaging portion that engages with the engaged portion in a process in which the battery moves from the attachment/detachment posture to the connection posture;
A battery mounting device for use in an electric vehicle, wherein the second wall portion has a guide surface on its inner surface for guiding the fitting portion in the first direction.
The battery mounting device according to claim 1, wherein the first wall portion and the two second wall portions are connected to each other.
The battery mounting device according to claim 1 or 2, wherein the height of the first wall portion is lower than the two second wall portions.
The battery mounting device according to any one of claims 1 to 3, wherein the housing has a third wall formed on a side opposite to the first wall.
The fitting portion has a guided portion guided along the guide surface,
5. The fitting portion does not come into contact with the terminal when the fitting portion is located on the upper edge of the third wall portion and the guided portion is located on the guide surface. battery-powered device.
the third direction is opposite to the first direction;
The battery mounting device according to claim 4 or 5, wherein the terminal is located in the third direction with respect to the guide surface.
The battery mount according to any one of claims 1 to 6, wherein an upper portion of the guide surface has a surface facing in the first direction or a surface obliquely facing upward in the first direction. Device.
the engaging portion formed on the first wall includes a convex portion protruding toward the inside of the housing;
The battery mounting device according to any one of claims 1 to 7, wherein the engaged portion formed in the fitting portion includes a projection projecting toward the first wall portion.
The battery mounting device according to claim 8, wherein the upper surface of the convex portion of the first wall portion has an inclined surface that descends toward the inside of the housing.
A bicycle comprising the battery mounting device according to any one of claims 1 to 9.