Battery-operated handheld device

Abstract

A battery operated handheld device includes a housing for enclosing an electrical component and a battery holder. The battery holder includes a first battery slot and a second battery slot. The first and second battery slots are sized to accommodate batteries of different battery sizes. The second battery slot is adjacent to the first battery slot. The electrical component of the handheld device can be powered by a first battery inserted into the first battery slot or by a second battery inserted into the second battery slot. The battery holder can serve as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with the first battery inserted into the first battery slot and a second predetermined center of gravity associated with the second battery inserted into the second battery slot.

Description

Technical Field

[0001] Various embodiments generally relate to a battery operated handheld device. In particular, various embodiments generally relate to a one-handed handheld device. Background Art

[0002] Handheld devices include, but are not limited to, computer mice, remote controls, remote game pads, or virtual reality (VR) controllers. Most of these handheld devices are configured for one-handed use. Therefore, weight distribution is an important aspect of such one-handed handheld devices. However, since different users have different hand sizes and different wrist strengths, handheld devices may not be suitable for every user. In addition, for different usage scenarios and / or applications, usage requirements may also be different, which may require different weight distributions. Therefore, users need to find a handheld device that is suitable for their hand size and wrist strength, and may also have to own multiple handheld devices to meet different usage requirements.

[0003] Therefore, there is a need to provide a handheld device that can provide a simpler and more versatile solution. Summary of the invention

[0004] According to various embodiments, a battery-operated handheld device is provided. The battery-operated handheld device may include a housing for enclosing electrical components of the handheld device. The housing may have a front region and a rear region, whereby when the handheld device is in use and held in the hand of a user, the front region is oriented away from the user and the rear region is oriented toward the user. The battery-operated handheld device may include a battery holder disposed within the housing. The battery holder may include a first battery slot and a second battery slot. The first battery slot may be sized to accommodate a first battery of a first battery size. The second battery slot may be adjacent to the first battery slot so as to be arranged side by side with the first battery slot. The second battery slot may be sized to accommodate a second battery of a second battery size. The second battery size may be different from the first battery size. The electrical components of the handheld device may be powered by a first battery of a first battery size inserted into the first battery slot of the battery holder, or by a second battery of a second battery size inserted into the second battery slot of the battery holder. The battery holder can be configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder. The second predetermined center of gravity can be located rearward of the first predetermined center of gravity relative to the front and rear regions of the housing.

[0005] According to various embodiments, a battery-operated handheld device is provided. The battery-operated handheld device may include an elongated housing for enclosing an electrical component of the handheld device. The elongated housing may have a longitudinal front end portion and a longitudinal rear end portion. The longitudinal front end portion and the longitudinal rear end portion may be two opposite longitudinal ends of the elongated housing. The battery-operated handheld device may include a battery holder disposed within the elongated housing. The battery holder may include a first battery slot and a second battery slot. The first battery slot may be sized to accommodate a first battery of a first battery size. The second battery slot may be adjacent to the first battery slot so as to be arranged side by side with the first battery slot. The second battery slot may be sized to accommodate a second battery of a second battery size. The second battery size may be different from the first battery size. The electrical component of the handheld device may be powered by a first battery of a first battery size inserted into the first battery slot of the battery holder or by a second battery of a second battery size inserted into the second battery slot of the battery holder. The battery holder can be configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder. The second predetermined center of gravity can be located rearward of the first predetermined center of gravity relative to the longitudinal front end portion and the longitudinal rear end portion of the elongated housing.

[0006] According to various embodiments, a battery-operated computer mouse is provided. The battery-operated computer mouse may include a housing for enclosing electrical components of the computer mouse. The housing may have a rear palm rest region and a front region opposite the rear palm rest region. The battery-operated computer mouse may include a battery holder disposed within the housing. The battery holder may include a first battery slot and a second battery slot. The first battery slot may be sized to accommodate a first battery of a first battery size. The second battery slot may be adjacent to the first battery slot so as to be arranged side by side with the first battery slot. The second battery slot may be sized to accommodate a second battery of a second battery size. The second battery size may be different from the first battery size. The electrical components of the computer mouse may be powered by a first battery of a first battery size inserted into the first battery slot of the battery holder, or by a second battery of a second battery size inserted into the second battery slot of the battery holder. The battery holder may be configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with a first battery of a first battery size inserted into the first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into the second battery slot of the battery holder. The second predetermined center of gravity may be located rearward of the first predetermined center of gravity relative to the front region and the rear palm rest region of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In different views of the accompanying drawings, the same component symbols are generally used to describe the same or similar components. The drawings are not necessarily drawn according to actual scale, but generally emphasize the principles of the invention. In the following description, various embodiments of the present invention will be described with reference to the following drawings, in which:

[0008] Figure 1 A schematic diagram showing a battery operated handheld device according to various embodiments;

[0009] Figure 2A Display according to various embodiments Figure 1 Schematic diagram of a battery-operated handheld device; the first battery is installed in Figure 1 a first battery slot of a battery holder of a battery-operated handheld device;

[0010] Figure 2B Display according to various embodiments Figure 1 Schematic diagram of a battery-operated handheld device 100, wherein the second battery is installed in Figure 1 In a second battery slot of a battery holder of a battery-operated handheld device 100;

[0011] Figure 3A and Figure 3B Display according to various embodiments Figure 1 A schematic cross-sectional view of a battery-operated handheld device;

[0012] Figure 4A Display according to various embodiments Figure 1 A schematic diagram of further details of a battery holder for a battery-operated handheld device;

[0013] Figure 4B Display according to various embodiments Figure 1 A schematic diagram of a change in the connection between a battery holder and an electrical component of a battery-operated handheld device;

[0014] Figure 4C According to various embodiments, the battery is connected to Figure 1 A schematic diagram of electrical components of a battery-operated handheld device;

[0015] Figure 5A and Figure 5B According to various embodiments, as Figure 1 Different views of an example of a battery-operated handheld device of a computer mouse (or battery-operated computer mouse);

[0016] Figure 5C Display according to various embodiments Figure 5A and Figure 5B A top view of a computer mouse without a cover assembly and with a second battery inserted Figure 5A and Figure 5B a second battery slot of a battery holder of a computer mouse; and

[0017] Figure 5D Display according to various embodiments Figure 5A and Figure 5B A cross-sectional side view of a computer mouse with a second battery inserted into a second battery slot of a battery holder and a first battery present at a first battery slot of the battery holder. DETAILED DESCRIPTION

[0018] The following description of the embodiments of the apparatus is analogously valid for the corresponding methods, and vice versa. In addition, it should be understood that the embodiments described below can be combined with each other. For example, a part of one embodiment can be combined with a part of another embodiment.

[0019] It should be understood that the terms "on", "above", "top", "bottom", "side", "rear", "left", "right", "front", "lateral", "side", "upward", "downward", etc. in the following description are only for convenience and to help understand the relative position or direction, and are not intended to limit the direction of any device, structure, or any part of any device or structure. In addition, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" also represent plural cases. Similarly, unless the context clearly indicates otherwise, the word "or" also includes the meaning of the word "and".

[0020] Various embodiments generally relate to a battery operated handheld device. In particular, various embodiments generally relate to a one-handed handheld device. Thus, various embodiments may relate to a stand-alone battery operated handheld device. Furthermore, the stand-alone battery operated handheld device may be used with one hand. According to various embodiments, the battery operated handheld device may include, but is not limited to, a computer mouse, a remote control, a remote game pad, or a virtual reality (VR) controller.

[0021] According to various embodiments, the battery-operated handheld device may be configured to have a customizable weight distribution. Thus, the user may adjust or customize or change the weight distribution of the battery-operated handheld device so as to customize the battery-operated handheld device for their own hand size and wrist strength and different usage scenarios and / or requirements. According to various embodiments, the battery-operated handheld device may be powered by only a single battery and may be configured to accept different batteries of different battery sizes (e.g., AA and AAA, or cylindrical batteries and button batteries) so as to adjust or customize or change the weight distribution of the battery-operated handheld device. Thus, in addition to customizing or changing the weight distribution, the user may also have the flexibility to use different existing battery sizes. Thus, the user may choose to use a smaller battery to reduce the overall weight of the device, or use a larger battery in situations where battery life is more important. According to various embodiments, the batteries of different battery sizes may differ in size and / or shape. Although in the remainder of this document, for convenience, AA and AAA sized batteries are described as examples, it is understood that different battery sizes may include, but are not limited to, cylindrical batteries of A size or AA size or AAA size or AAAA size or B size or C size or D size or F size or N size or A11 size or A23 size or A27 size or BA5800 size, or rectangular batteries of 4.5 volt size or 9 volt size or 6 volt size, or button batteries of various sizes, or pouch batteries of various sizes. According to various embodiments, the battery-operated handheld device may be configured to ensure that the weight distribution remains optimal when any of the different batteries with different battery sizes are used. Therefore, the battery-operated handheld device may provide the flexibility of using different batteries according to availability, and the selection of using different batteries to adjust or customize or change the weight distribution of the battery-operated handheld device. For example, the weight distribution of the battery-operated handheld device may be changed to be lighter or heavier and / or shift the center of gravity.

[0022] According to various embodiments, a battery-operated handheld device may be configured to have a customizable weight distribution by inserting batteries of different battery sizes into different battery slots. For example, a battery-operated handheld device may include a battery holder or compartment having at least two side-by-side battery slots, wherein a first battery slot may accommodate a first battery of a first battery size (e.g., AA), and a second battery slot may accommodate a second battery of a second battery size (e.g., AAA). According to various embodiments, a battery-operated handheld device may include a cover for concealing the battery holder or compartment, and the cover may include a stop rib (or protrusion) disposed below the cover, such that when the cover is placed over the battery holder or compartment, the stop rib may be oriented toward the battery. Thus, the stop rib may prevent the battery from shifting or falling out of the battery holder or compartment, such that the stop rib may stabilize the battery when the battery-operated handheld device is violently moved during use. According to various embodiments, the battery holder or compartment may be configured to accommodate only one type of battery at any time. In other words, when a first battery of a first battery size is inserted into the battery holder or compartment, a second battery of a second battery size may not be inserted. Thus, when a battery holder or compartment has only two battery slots for different batteries, only one battery can be inserted into the battery holder or compartment at any time. Thus, batteries of different battery sizes may not fit into the battery holder or compartment at the same time. According to various embodiments, the battery-operated handheld device may be configured such that the center of gravity of the battery-operated handheld device without a battery and the center of gravity of the battery-operated handheld device with the first battery inserted may be aligned or coincident with each other. Thus, when a second battery is inserted into the second battery slot of the battery holder or compartment and with the first battery removed, the center of gravity of the battery-operated handheld device may be shifted.

[0023] The following exemplary embodiments are further implementations.

[0024] Embodiment 1 is a battery-operated handheld device comprising:

[0025] a housing for enclosing the electrical components of the handheld device, the housing having a front region and a rear region, the front region being oriented away from the user and the rear region being oriented toward the user when the handheld device is in use and held in the hand of the user; and

[0026] A battery holder is arranged in the housing, and the battery holder comprises:

[0027] a first battery well sized to receive a first battery of a first battery size; and

[0028] a second battery slot adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size;

[0029] Wherein, the electrical components of the handheld device are powered by a first battery of a first battery size inserted into a first battery slot of the battery holder, or by a second battery of a second battery size inserted into a second battery slot of the battery holder;

[0030] The battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder, wherein the second predetermined center of gravity is located rearward of the first predetermined center of gravity relative to the front and rear regions of the housing.

[0031] In Example 2, the subject matter of Example 1 can optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder can be aligned with a battery-free center of gravity of the handheld device.

[0032] In Example 3, the subject matter of any one of Examples 1 or 2 may optionally include that the battery holder can be arranged in the shell in a manner such that each of the first battery slot and the second battery slot can be non-parallel to the front-to-back center line extending vertically between the front region and the rear region of the shell.

[0033] In Example 4, the subject matter of Example 3 may optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of a battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder may be along the front-to-back centerline.

[0034] In Example 5, the subject matter of any one of Examples 3 or 4 can optionally include that each of the first battery well and the second battery well can be diagonally oriented relative to the front-rear centerline.

[0035] In Example 6, the subject matter of any one of Examples 1 to 5 may optionally include that the width of the first battery slot of the battery holder may be smaller than the width of the first battery, and the width of the second battery slot of the battery holder may be smaller than the width of the second battery in a manner that prevents the first battery slot from receiving the first battery while allowing the second battery slot to receive the second battery.

[0036] In Example 7, the subject matter of any one of Examples 1 to 6 may optionally include that the housing may include a cover member removably placed on the battery seat to conceal the battery seat, wherein the cover member may include a protrusion extending toward the battery seat, the protrusion acting as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

[0037] In Example 8, the subject matter of any one of Examples 1 to 7 may optionally include that the first battery slot may include a first pair of opposing support walls, which are used to respectively engage with the cover and the base of the first battery so as to accommodate the first battery therebetween, wherein the first pair of opposing support walls may be spaced apart by a first predetermined distance so as to enable the size to be designed to accommodate the first battery, and the second battery slot may include a second pair of opposing support walls, which are used to respectively engage against the cover and the base of the second battery so as to accommodate the second battery therebetween, wherein the second pair of opposing support walls may be spaced apart by a second predetermined distance so as to enable the size to be designed to accommodate the second battery, and wherein the second predetermined distance may be different from the first predetermined distance.

[0038] In Example 9, the subject matter of Example 8 may optionally include that the second predetermined distance may be shorter than the first predetermined distance.

[0039] In Example 10, the subject matter of Example 8 or 9 may optionally include that the first wall of each of the first pair and the second pair of opposing support walls may include an ear piece, and the second wall of each of the first pair and the second pair of opposing support walls may include a spring, so that the ear piece and the spring can be pressed against the cover and the base of the first battery or the second battery, respectively.

[0040] Embodiment 11 is a battery-operated handheld device comprising:

[0041] An elongated housing for enclosing an electrical component of a handheld device, the elongated housing having a longitudinal front portion and a longitudinal rear portion, wherein the longitudinal front portion and the longitudinal rear portion are two opposite longitudinal ends of the elongated housing; and

[0042] A battery holder is disposed in an elongated housing, the battery holder comprising:

[0043] a first battery well sized to receive a first battery of a first battery size; and

[0044] a second battery slot adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size;

[0045] Wherein, the electrical components of the handheld device are powered by a first battery of a first battery size inserted into a first battery slot of the battery holder, or by a second battery of a second battery size inserted into a second battery slot of the battery holder;

[0046] The battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder, wherein the second predetermined center of gravity is located rearward of the first predetermined center of gravity relative to a longitudinal front end portion and a longitudinal rear end portion of the elongated housing.

[0047] In Example 12, the subject matter of Example 11 can optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder can be aligned with a battery-free center of gravity of the handheld device.

[0048] In Example 13, the subject matter of Example 11 or 12 may optionally include that the battery holder can be arranged in the shell in a manner that each of the first battery slot and the second battery slot is not parallel to the front-to-back center line extending vertically between the longitudinal front end portion and the longitudinal rear end portion of the shell.

[0049] In Example 14, the subject matter of Example 13 may optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of a battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder may be along the front-to-back centerline.

[0050] In Example 15, the subject matter of Example 13 or 14 can optionally include that each of the first battery well and the second battery well can be diagonally oriented relative to the front-rear centerline.

[0051] In Example 16, the subject matter of any one of Examples 11 to 15 may optionally include that the width of the first battery slot of the battery holder may be smaller than the width of the first battery, and the width of the second battery slot of the battery holder may be smaller than the width of the second battery in a manner that prevents the first battery slot from receiving the first battery while enabling the second battery slot to receive the second battery.

[0052] In Example 17, the subject matter of any one of Examples 11 to 16 may optionally include that the elongated housing may include a cover member that can be removably placed on the battery holder to conceal the battery holder, wherein the cover member may include a protrusion extending toward the battery holder, the protrusion acting as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

[0053] In Example 18, the subject matter of any one of Examples 11 to 17 may optionally include that the first battery slot may include a first pair of opposing support walls, which are used to engage with the cover and the base of the first battery respectively so as to accommodate the first battery therebetween, wherein the first pair of opposing support walls may be spaced apart by a first predetermined distance so as to be sized to accommodate the first battery, and the second battery slot may include a second pair of opposing support walls, which are used to engage against the cover and the base of the second battery respectively so as to accommodate the second battery therebetween, wherein the second pair of opposing support walls may be spaced apart by a second predetermined distance so as to be sized to accommodate the second battery, wherein the second predetermined distance may be different from the first predetermined distance.

[0054] In Example 19, the subject matter of Example 18 may optionally include that the second predetermined distance may be shorter than the first predetermined distance.

[0055] In Example 20, the subject matter of Example 18 or 19 may optionally include that the first wall of each of the first pair and the second pair of opposing support walls may include an ear piece, and the second wall of each of the first pair and the second pair of opposing support walls may include a spring, so that the ear piece and the spring can be pressed against the cover and the base of the first battery or the second battery, respectively.

[0056] Embodiment 21 is a battery-operated computer mouse comprising:

[0057] A housing for enclosing electrical components of a computer mouse, the housing having a rear palm rest area and a front area opposite the rear palm rest area; and

[0058] A battery holder is arranged in the housing, and the battery holder comprises:

[0059] a first battery well sized to receive a first battery of a first battery size; and

[0060] a second battery slot adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size,

[0061] wherein the electrical components of the computer mouse are powered by a first battery of a first battery size inserted into a first battery slot of the battery holder or by a second battery of a second battery size inserted into a second battery slot of the battery holder;

[0062] wherein the battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the computer mouse between a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder, wherein the second predetermined center of gravity is located rearward of the first predetermined center of gravity relative to the front area and the rear palm rest area of ​​the housing.

[0063] In Example 22, the subject matter of Example 21 can optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of the battery holder can be aligned with a battery-free center of gravity of the handheld device.

[0064] In Example 23, the subject matter of Example 21 or 22 may optionally include that the battery holder can enable each of the first battery slot and the second battery slot to be arranged in the shell in a manner that is not parallel to the front-rear center line extending vertically between the front area and the rear palm rest area of ​​the shell.

[0065] In Example 24, the subject matter of Example 23 may optionally include that a first predetermined center of gravity associated with a first battery of a first battery size inserted into a first battery slot of a battery holder and a second predetermined center of gravity associated with a second battery of a second battery size inserted into a second battery slot of the battery holder may be along the front-to-back centerline.

[0066] In Example 25, the subject matter of Example 23 or 24 can optionally include that each of the first battery well and the second battery well can be diagonally oriented relative to the front-rear centerline.

[0067] In Example 26, the subject matter of any one of Examples 21 to 25 may optionally include that the width of the first battery slot of the battery holder may be smaller than the width of the first battery, and the width of the second battery slot of the battery holder may be smaller than the width of the second battery in a manner that prevents the first battery slot from receiving the first battery while enabling the second battery slot to receive the second battery.

[0068] In Example 27, the subject matter of any one of Examples 21 to 26 may optionally include that the housing may include a cover member that is removably placed on the battery seat to conceal the battery seat, wherein the cover member may include a protrusion extending toward the battery seat, the protrusion acting as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

[0069] In Example 28, the subject matter of Example 27 may optionally include that the cover member may be an upper member of the housing, and the battery holder may be fixedly coupled to or integrated with the base member of the housing.

[0070] In Example 29, the subject matter of Example 27 or 28 may optionally include that the protrusion may include a free end having an end surface, a first portion of which is suspended above the first battery slot, and a second portion of which is suspended above the second battery slot, wherein the first portion has a contour corresponding to the first battery and the second portion has a contour corresponding to the second battery.

[0071] In Example 30, the subject matter of any one of Examples 21 to 29 may optionally include that the battery holder may include a dongle socket for accommodating a dongle of a computer mouse, the dongle socket being adjacent to the second battery slot such that the second battery slot is located between the first battery slot and the dongle socket.

[0072] In Example 31, the subject matter of any one of Examples 21 to 30 may optionally include that the first battery slot may include a first pair of opposing support walls, which are used to engage with the cover and the base of the first battery, respectively, so as to accommodate the first battery therebetween, wherein the first pair of opposing support walls may be spaced apart by a first predetermined distance so as to be sized to accommodate the first battery, and the second battery slot may include a second pair of opposing support walls, which are used to engage against the cover and the base of the second battery, respectively, so as to accommodate the second battery therebetween, wherein the second pair of opposing support walls may be spaced apart by a second predetermined distance so as to be sized to accommodate the second battery, wherein the second predetermined distance may be different from the first predetermined distance.

[0073] In Example 32, the subject matter of Example 31 may optionally include that the second predetermined distance may be shorter than the first predetermined distance.

[0074] In Example 33, the subject matter of Example 31 or 32 may optionally include that the first wall of each of the first pair and the second pair of opposing support walls may include an ear piece, and the second wall of each of the first pair and the second pair of opposing support walls may include a spring, so that the ear piece and the spring can be pressed against the cover and the base of the first battery or the second battery, respectively.

[0075] In Example 34, the subject matter of any one of Examples 31 to 33 may optionally include that a first wall of a first pair of opposing support walls of the first battery well and a first wall of a second pair of opposing support walls of the second battery well may be aligned.

[0076] Figure 1A schematic diagram of a battery operated handheld device 100 is shown according to various embodiments. According to various embodiments, the battery operated handheld device 100 may include a housing 110. The housing 110 may be an outer housing of the battery operated handheld device 100. According to various embodiments, the housing 110 may define an inner chamber to accommodate or enclose or encapsulate an electrical component 102 of the battery operated handheld device 100. According to various embodiments, the electrical component 102 of the battery operated handheld device 100 may include, but is not limited to, one or a combination of a circuit board, an integrated circuit, an electronic component, a sensor, a detector, a receiver, a transmitter, a switch, a processor, a display, or a memory. The electrical component 102 of the battery operated handheld device 100 may be configured to perform the functions of the battery operated handheld device 100.

[0077] According to various embodiments, the housing 110 of the battery-operated handheld device 100 may include a front region 112 and a rear region 114. According to various embodiments, when the battery-operated handheld device 100 is in use and held in the hand of a user, the front region 112 may be oriented away from the user, and the rear region 114 may be oriented toward the user. For example, when the battery-operated handheld device 100 is a remote control, a remote game pad, or a virtual reality (VR) controller, the front region 112 of the battery-operated handheld device 100 may be a side or face of the battery-operated handheld device 100 that is oriented or pointed toward a corresponding device or receiver. Therefore, the rear region 114 of the battery-operated handheld device 100 may be relative to the front region 112 of the battery-operated handheld device 100. Thus, when the battery-operated handheld device 100 (in the form of a remote control, a remote game pad, or a virtual reality (VR) controller) is in use and held in the hand of a user, the user may orient or point the front region 112 of the battery-operated handheld device 100 toward a corresponding device or receiver, while the rear region 114 of the battery-operated handheld device 100 may be orientated or pointed toward the user. In another example, when the battery-operated handheld device 100 is a computer mouse placed on a table, the rear region 114 of the battery-operated handheld device 100 may be grasped by the palm of the user while the user holds the battery-operated handheld device 100 so that the front region 112 of the battery-operated handheld device 100 may be orientated or pointed away from the user. Thus, when the battery-operated handheld device 100 (in the form of a computer mouse) is in use and held in the hand of a user, the user may hold the battery-operated handheld device 100 with the front region 112 of the battery-operated handheld device 100 oriented or pointed away from the user, while the rear region 114 of the battery-operated handheld device 100 may be oriented or pointed toward the user.

[0078] According to various embodiments, the housing 110 of the battery-operated handheld device 100 may be an elongated housing 110a. According to various embodiments, the elongated housing 110a of the battery-operated handheld device 100 may include a longitudinal front end portion 112a and a longitudinal rear end portion 114a. The longitudinal front end portion 112a and the longitudinal rear end portion 114a may be two opposite longitudinal ends of the elongated housing 110a. According to various embodiments, the longitudinal front end portion 112a may serve as the front region 112 of the battery-operated handheld device 100, and the longitudinal rear end portion 114a may serve as the rear region 114 of the battery-operated handheld device 100. Therefore, when the battery-operated handheld device 100 is in use and held in the hand of a user, the longitudinal front end portion 112a may be oriented away from the user, and the longitudinal rear end portion 114a may be oriented toward the user.

[0079] According to various embodiments, the battery operated handheld device 100 may include a battery holder 120. According to various embodiments, the battery holder 120 may be disposed within the housing 110 or the elongated housing 110a. Thus, the battery holder 120 may be housed or covered or encapsulated by the housing 110 or the elongated housing 110a.

[0080] According to various embodiments, the battery holder 120 of the battery-operated handheld device 100 may include at least two (or two or more) battery slots 130, 140 (or battery trays) for receiving at least two (or two or more) different types of batteries 104, 106 (see Figure 2A and Figure 2B). Different types of batteries 104, 106 may have different battery sizes. For example, the first type of battery 104 may have a first battery size, and the second type of battery 106 may have a second battery size, which is different from the first battery size. According to various embodiments, the first battery size and the second battery size may be any two different battery sizes, each battery including, but not limited to, a cylindrical battery of A size or AA size or AAA size or AAAA size or B size or C size or D size or F size or N size or A11 size or A23 size or A27 size or BA5800 size, or a rectangular battery of 4.5 volt size or 9 volt size or 6 volt size, or button batteries of various sizes, or pouch batteries of various sizes. According to various embodiments, at least two battery slots 130, 140 of the battery holder 120 may be configured side by side. According to various embodiments, the electrical component 102 of the battery-operated handheld device 100 may be configured to be powered by one or more batteries of the same battery size. Therefore, when one or more first type batteries are loaded into the battery holder 120, or when one or more second type batteries are loaded into the battery holder 120, the electrical component 102 of the battery-operated handheld device 100 can be powered. According to various embodiments, when different types of batteries 104, 106 of different battery sizes are used in the battery-operated handheld device 100, the weight distribution of the battery-operated handheld device 100 can be changed or varied or altered or adjusted or customized. Therefore, the user can selectively switch between using different types of batteries 104, 106 of different battery sizes to power the battery-operated handheld device 100, so as to change or adjust or customize the weight distribution of the battery-operated handheld device 100 according to the size and wrist strength of the hand and different usage scenarios and / or requirements. For example, the user can flexibly switch between different types of different batteries 104, 106 to use smaller batteries to reduce the overall weight of the handheld device 100, or use larger batteries when battery life is more important.

[0081] According to various embodiments, the battery holder 120 of the battery-operated handheld device 100 may include a first battery slot 130 (or a first battery tray) and a second battery slot 140 (or a second battery tray). According to various embodiments, each of the first battery slot 130 and the second battery slot 140 may be a channel or a groove or a narrow and elongated depression. According to various embodiments, the first battery slot 130 may be sized to accommodate a first battery 104 of a first battery size. According to various embodiments, the second battery slot 140 may be sized to accommodate a second battery 106 of a second battery size. The first battery size and the second battery size may be different battery sizes. According to various embodiments, the second battery slot 140 may be beside the first battery slot 130 so as to be arranged side by side with the first battery slot 130. Therefore, the first battery slot 130 and the second battery slot 140 may be parallel to each other, and may be adjacent to each other, so that the first battery slot 130 and the second battery slot 140 may border each other.

[0082] According to various embodiments, the electrical component 102 of the battery-operated handheld device 100 may be powered by the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 or by the second battery 106 of the second battery size inserted into the second battery slot 140 of the battery holder 120. Therefore, the electrical component 102 of the battery-operated handheld device 100 may be powered when only the first battery 104 of the first battery size is inserted into the first battery slot 130 of the battery holder 120. The electrical component 102 of the battery-operated handheld device 100 may also be powered when only the second battery 106 of the second battery size is inserted into the second battery slot 140 of the battery holder 120. Therefore, the electrical component 102 of the battery-operated handheld device 100 may be powered by only installing one of the first battery 104 or the second battery 106 on the battery holder 120.

[0083] According to various embodiments, the battery holder 120 of the battery-operated handheld device 100 can be configured in a manner that serves as an adjustable weight distribution mechanism to shift the center of gravity of the battery-operated handheld device 100. Therefore, by loading the first battery 104 of the first battery size into the first battery slot 130 of the battery holder 120 or loading the second battery 106 of the second battery size into the second battery slot 140 of the battery holder 120, the center of gravity of the battery-operated handheld device 100 can be changed or varied or altered or adjusted or customized. Therefore, by selectively loading the first battery 104 or the second battery 106 into the battery holder 120 to power the electrical components 102 of the battery-operated handheld device 100, the weight distribution of the battery-operated handheld device 100 can be changed or varied or altered or adjusted or customized to accommodate the user's hand size and / or wrist strength, as well as different usage scenarios and / or requirements. In addition, the battery holder 120 of the battery-operated handheld device 100 can also be used to provide users with the flexibility to use different battery sizes that they already have. For example, the user is provided with the option of using a smaller battery to reduce the overall weight of the handheld device 100, or using a larger battery when battery life is more important.

[0084] According to various embodiments, the battery holder 120 of the battery-operated handheld device 100 as an adjustable weight distribution mechanism may shift the center of gravity of the battery-operated handheld device 100 between a first predetermined center of gravity 154 associated with a first battery 104 of a first battery size inserted into a first battery slot 130 of the battery holder 120 and a second predetermined center of gravity 156 associated with a second battery 106 of a second battery size inserted into a second battery slot 140 of the battery holder 120. According to various embodiments, the second predetermined center of gravity 156 may be located behind the first predetermined center of gravity 154 relative to the front region 112 and the rear region 114 of the housing 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the elongated housing 110a). Thus, the second predetermined center of gravity 156 may be closer to the rear region 114 of the housing 110 (or the longitudinal rear end portion 114a of the elongated housing 110a). Thus, the first predetermined center of gravity 154 may be closer to the front region 112 of the housing 110 (or the longitudinal front end portion 112a of the elongated housing 110a ) and may be located forward of the second predetermined center of gravity 156 .

[0085] According to various embodiments, the battery holder 120 of the battery-operated handheld device 100 may be configured as an adjustable weight distribution mechanism to switch the battery-operated handheld device 100 between different weight modes, including but not limited to at least a balanced weight mode and a rear-weight mode, or a front-weight mode and a balanced weight mode, or a front-weight mode and a rear-weight mode. According to various embodiments, in the balanced weight mode, the center of gravity of the battery-operated handheld device 100 may be in the middle or center around the battery-operated handheld device 100. According to various embodiments, in the front-weight mode, the center of gravity of the battery-operated handheld device 100 may be in front of the middle or center of the battery-operated handheld device 100 and toward the front region 112 of the housing 110 (or the longitudinal front end portion 112a of the elongated housing 110a). According to various embodiments, in rear-heavy mode, the center of gravity of the battery-operated handheld device 100 may be behind the middle or center of the battery-operated handheld device 100 and toward the rear region 114 of the housing 110 (or the longitudinal rear end portion 114a of the elongated housing 110a).

[0086] According to various embodiments, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 may be aligned with the battery-free center of gravity of the battery-operated handheld device 100. The battery-free center of gravity of the battery-operated handheld device 100 may be the center of gravity of the battery-operated handheld device 100 when no battery is inserted or installed into the battery holder 120. In other words, the battery-free center of gravity of the battery-operated handheld device 100 may be the center of gravity of the battery-operated handheld device 100 when no weight is applied or no battery is installed. Therefore, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 and the battery-free center of gravity of the battery-operated handheld device 100 may coincide. Therefore, regardless of whether the first battery 104 is inserted into the first battery slot 130 of the battery holder 120, the center of gravity of the battery-operated handheld device 100 can be such that it does not move forward or backward relative to the front area 112 and the rear area 114 of the shell 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the slender shell 110a).

[0087] According to various embodiments, the first battery well 130 of the battery holder 120 may correspond to the first predetermined center of gravity 154 of the battery-operated handheld device 100. Thus, the first battery well 130 of the battery holder 120 may serve as a visual pointer to the location of the first predetermined center of gravity 154 of the battery-operated handheld device 100. For example, the center of the first battery well 130 of the battery holder 120 may be aligned with or may coincide with the first predetermined center of gravity 154 of the battery-operated handheld device 100. Thus, the center of the first battery well 130 of the battery holder 120 may provide a visual reference for the location of the first predetermined center of gravity 154 of the battery-operated handheld device 100.

[0088] According to various embodiments, the second battery well 140 of the battery holder 120 may correspond to the second predetermined center of gravity 156 of the battery-operated handheld device 100. Thus, the second battery well 140 of the battery holder 120 may serve as a visual pointer to the location of the second predetermined center of gravity 156 of the battery-operated handheld device 100. For example, the center of the second battery well 140 of the battery holder 120 may be aligned with or may coincide with the second predetermined center of gravity 156 of the battery-operated handheld device 100. Thus, the center of the second battery well 140 of the battery holder 120 may provide a visual reference for the location of the second predetermined center of gravity 156 of the battery-operated handheld device 100.

[0089] According to various embodiments, the battery holder 120 may be disposed within the housing 110 (or the elongated housing 110a) in a manner such that each of the first battery slot 130 and the second battery slot 140 may be non-parallel to a front-to-back centerline 111 extending vertically between the front region 112 and the rear region 114 of the housing 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the elongated housing 110a). The front-to-back centerline 111 may pass through the center of the housing 110 (or the elongated housing 110a) from the front region 112 to the rear region 114 (or from the longitudinal front end portion 112a to the longitudinal rear end portion 114a) so as to divide the housing 110 (or the elongated housing 110a) into two equal transverse portions. Therefore, the slot axis of the first battery slot 130 may be angled or inclined relative to the front-to-back centerline 111. Similarly, the slot axis of the second battery slot 140 may be angled or inclined relative to the front-to-back centerline 111. According to various embodiments, each of the first battery slot 130 and the second battery slot 140 may intersect the front-back centerline 111 at an angle. For example, each of the first battery slot 130 and the second battery slot 140 may intersect the front-back centerline 111 diagonally or laterally. Thus, each of the first battery slot 130 and the second battery slot 140 may be oriented in a diagonal or laterally manner relative to the front-back centerline 111.

[0090] According to various embodiments, a first predetermined center of gravity 154 associated with a first battery 104 of a first battery size inserted into a first battery slot 130 of a battery holder 120 and a second predetermined center of gravity 156 associated with a second battery 106 of a second battery size inserted into a second battery slot 140 of a battery holder 120 may be along the front-back centerline 111. Thus, each of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be located on the front-back centerline 111 and spaced apart from each other. Thus, by selectively mounting the first battery 104 or the second battery 106 to the battery holder 120, the weight distribution of the battery-operated handheld device 100 may be switched between the first predetermined center of gravity 154 and the second predetermined center of gravity 156 along the front-back centerline 111.

[0091] According to various embodiments, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 and the second predetermined center of gravity 156 associated with the second battery 106 of the second battery size inserted into the second battery slot 140 of the battery holder 120 may be laterally offset from the front-to-back centerline 111. Therefore, each of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may not be located on the front-to-back centerline 111. According to various embodiments, the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset to the same side from the front-to-back centerline 111. According to various embodiments, the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset to opposite sides from the front-to-back centerline 111. According to various embodiments, one of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be along the front-to-back centerline 111, and the other of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset from the front-to-back centerline 111. However, regardless of whether the first predetermined center of gravity 154 and the second predetermined center of gravity 156 are along the front-to-back centerline 111 or laterally offset from the front-to-back centerline 111, the second predetermined center of gravity 156 may still be spaced rearwardly from the first predetermined center of gravity 154 relative to the front region 112 and rear region 114 of the shell 110 (or the longitudinal front end portion 112a and longitudinal rear end portion 114a of the slender shell 110a).

[0092] Figure 2A A schematic diagram of a battery operated handheld device 100 is shown with a first battery 104 installed in a first battery slot 130 of a battery holder 120 according to various embodiments. Figure 2BA schematic diagram of a battery-operated handheld device 100 according to various embodiments is shown, with the second battery 106 installed in the second battery slot 140 of the battery holder 120. According to various embodiments, the width of the first battery slot 130 of the battery holder 120 may be smaller than the width of the first battery 104, and the width of the second battery slot 140 of the battery holder 120 may be smaller than the width of the second battery 106. According to various embodiments, when the first battery 104 is installed in the first battery slot 130 of the battery holder 120, since the width of the first battery 104 is wider than the width of the first battery slot 130, the side of the first battery 104 may protrude from the boundary of the first battery slot 130 so as to extend over or into the second battery slot 140. According to various embodiments, when the second battery 106 is installed in the second battery groove 1430 of the battery holder 120, since the width of the second battery 106 is wider than the width of the second battery groove 140, the side of the second battery 106 may protrude from the boundary of the second battery groove 140 so as to extend over or into the first battery groove 130. Therefore, the battery holder 120 may prevent the second battery groove 140 from receiving the second battery 106 while the first battery groove 130 receives the first battery 104. Therefore, the battery holder 120 may not allow the second battery 106 to be installed in the second battery groove 140 while the first battery 104 is installed in the first battery groove 130.

[0093] Figure 3A and Figure 3B A schematic cross-sectional view of a battery operated handheld device 100 according to various embodiments is shown. According to various embodiments, the housing 110 (or the elongated housing 110a) may include a cover member 116. According to various embodiments, the cover member 116 may be removably placed on the battery holder 120 to conceal the battery holder 120. According to various embodiments, the cover member 116 may be removably attached to the rest of the housing 110 (or the elongated housing 110a), or may be removably attached to the battery holder 120, or may be removably attached to the internal frame structure of the battery operated handheld device 100.

[0094] According to various embodiments, the cover member 116 may include a protrusion 118. According to various embodiments, the protrusion 118 may extend from a lower surface of the cover member 116. When the cover member 116 is placed on the battery holder 120, the lower surface of the cover member 116 may face the battery holder 120. According to various embodiments, the protrusion 118 may extend toward the battery holder 120. According to various embodiments, the protrusion 118 may serve as a retainer or stop rib to prevent the first battery 104 or the second battery 106 from being displaced or moved out of the first battery slot 130 or the second battery slot 140, respectively. Therefore, the end surface of the protrusion 118 may be suspended above the first battery slot 130 and the second battery slot 140. Therefore, when the first battery 104 is installed in the first battery slot 130, a first portion of the end surface of the protrusion 118 may be suspended above the first battery slot 130 so as to loosely abut against the first battery 104. Likewise, when the second battery 106 is installed into the second battery slot 140, the second portion of the end surface of the protrusion 118 may be suspended above the second battery slot 140 so as to loosely abut against the second battery 106. Therefore, the first portion and the second portion of the end surface of the protrusion 118 may respectively block or hinder the first battery 104 or the second battery 106 from being displaced or removed from the first battery slot 130 or the second battery slot 140, respectively.

[0095] Figure 4A A schematic diagram showing further details of the battery holder 120 of the battery operated handheld device 100 according to various embodiments. According to various embodiments, the first battery slot 130 of the battery holder 120 may include a first pair of opposing support walls 132, 134 for engaging with the cover and base of the first battery 104, respectively (e.g., Figure 2A ) so as to accommodate the first battery 104 in the middle. According to various embodiments, the first pair of opposing support walls 132, 134 may be located at opposite longitudinal ends of the first battery slot 130 so as to define the length of the first battery slot 130. Therefore, the first pair of opposing support walls 132, 134 may be spaced apart by a first predetermined distance to define the length of the first battery slot 130 so as to be sized to accommodate the first battery 104. Therefore, the first predetermined distance may be equal to or longer than the length of the first battery 104. According to various embodiments, the second battery slot 140 may include a second pair of opposing support walls 142, 144 for respectively engaging against the cover and base of the second battery 106 (see, for example, Figure 2B), so as to accommodate the second battery 106 therebetween. According to various embodiments, the second pair of opposing support walls 142, 144 may be located at opposite longitudinal ends of the second battery slot 140, so as to define the length of the second battery slot 140. Therefore, the second pair of opposing support walls 142, 144 may be spaced apart at a second predetermined distance for defining the length of the second battery slot 140, so as to be sized to accommodate the second battery 106. Therefore, the second predetermined distance may be equal to or longer than the length of the second battery 106. According to various embodiments, the second predetermined distance may be different from the first predetermined distance because the battery sizes of the first battery 104 and the second battery 106 are different. For example, when the battery size of the first battery 104 (e.g., AA) is longer than the second battery 106 of another battery size (e.g., AAA), the second predetermined distance may be shorter than the first predetermined distance.

[0096] According to various embodiments, the first wall 132 of the first pair of opposing support walls of the first battery slot 130 may include a tab 136, and the second wall 134 of the first pair of opposing support walls of the first battery slot 130 may include a spring 138. According to various embodiments, the tab 136 and the spring 138 of the first battery slot 130 may be pressed against the cover and the base of the first battery 104, respectively, so as to coordinately hold the first battery 104 in the first battery slot 130. According to various embodiments, the spring 138 may include, but is not limited to, a coil spring, a conical spring, a spiral spring, a leaf spring, a torsion spring, or a circular spring. According to various embodiments, the tab 136 may be made of a conductive material for connecting the positive terminal of the first battery 104 at the cover of the first battery 104 to the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the spring 138 may be made of a conductive material for connecting the negative terminal of the first battery 104 at the base of the first battery 104 to the electrical component 102 of the battery-operated handheld device 100.

[0097] According to various embodiments, the first wall 142 of the second pair of opposing support walls of the second battery slot 140 may include a tab 146, and the second wall 144 of the second pair of opposing support walls of the second battery slot 140 may include a spring 148. According to various embodiments, the tab 146 and the spring 148 of the second battery slot 140 may be pressed against the cover and the base of the second battery 106, respectively, so as to coordinately hold the second battery 106 in the second battery slot 140. According to various embodiments, the spring 148 may include, but is not limited to, a coil spring, a conical spring, a spiral spring, a leaf spring, a torsion spring, or a circular spring. According to various embodiments, the tab 146 may be made of a conductive material for connecting the positive terminal of the second battery 106 at the cover of the second battery 106 to the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the spring 148 may be made of a conductive material for connecting the negative terminal of the second battery 106 at the base of the second battery 106 to the electrical component 102 of the battery-operated handheld device 100.

[0098] like Figure 4A As shown, according to various embodiments, the tab 136 of the first battery slot 130 and the tab 146 of the second battery slot 140 can be independently connected to the electrical component 102 of the battery-operated handheld device 100, and the spring 138 of the first battery slot 130 and the spring 148 of the second battery slot 140 can be independently connected to the electrical component 102 of the battery-operated handheld device 100. Therefore, inserting the first battery 104 into the first battery slot 130 can connect the positive terminal of the first battery 104 to the electrical component 102 via the tab 136 of the first battery slot 130, and can connect the negative terminal of the first battery 104 to the electrical component 102 via the spring 138 of the first battery slot 130. Similarly, inserting the second battery 106 into the second battery slot 140 can connect the positive terminal of the second battery 106 to the electrical component 102 via the tab 146 of the second battery slot 140, and can connect the negative terminal of the second battery 106 to the electrical component 102 via the spring 148 of the second battery slot 140. Therefore, the electrical component 102 of the battery-operated handheld device 100 can be powered by selectively inserting the first battery 104 into the first battery slot 130 or inserting the second battery 106 into the second battery slot 140.

[0099] Figure 4BA schematic diagram showing a variation of the connection between the battery holder 120 and the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the tab 136 of the first battery slot 130 and the tab 146 of the second battery slot 140 may be connected to each other. For example, the battery holder 120 may include a first conductive track 137 to connect the tab 136 of the first battery slot 130 and the tab 146 of the second battery slot 140 to each other. Thereafter, the first conductive track 137 may be connected to the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the spring 138 of the first battery slot 130 and the spring 148 of the second battery slot 140 may be connected to each other. For example, the battery holder 120 may include a second conductive track 139 to connect the spring 138 of the first battery slot 130 and the spring 148 of the second battery slot 140 to each other. Thereafter, the second conductive track 139 may be connected to the electrical component 102 of the battery-operated handheld device 100. Therefore, inserting the first battery 104 into the first battery slot 130 can connect the positive terminal of the first battery 104 to the electrical component 102 through the tab 136 of the first battery slot 130 via the first conductive track 137, and can connect the negative terminal of the first battery 104 to the electrical component 102 through the tab 146 of the second battery slot 140 via the second conductive track 139. Similarly, inserting the second battery 106 into the second battery slot 140 can connect the positive terminal of the second battery 106 to the electrical component 102 through the spring 138 of the first battery slot 130 via the first conductive track 137, and can connect the negative terminal of the second battery 106 to the electrical component 102 through the spring 148 of the second battery slot 140 via the second conductive track 139. Therefore, the electrical component 102 of the battery-operated handheld device 100 can be powered by selectively inserting the first battery 104 into the first battery slot 130 or inserting the second battery 106 into the second battery slot 140.

[0100] Figure 4CA schematic diagram showing an electrical component 102 of a battery-operated handheld device 100 with a first battery 104 or a second battery 106 connected to it according to various embodiments. According to various embodiments, the electrical component 102 may include an overcurrent circuit at the connection between the electrical component 102 and the first battery 104 or the second battery 106 to prevent overcurrent. For example, the overcurrent circuit may include, but is not limited to, a positive temperature coefficient (PTC) fuse. According to various embodiments, the electrical component 102 may include an overvoltage circuit at the connection between the electrical component 102 and the first battery 104 or the second battery 106 to prevent overvoltage. The overvoltage circuit may be configured to cut off power when the input voltage exceeds a default value, or to adjust the input voltage so that it is always less than or equal to a default value. For example, the overvoltage circuit may include, but is not limited to, a Zener diode and a bipolar transistor. According to various embodiments, the electrical component 102 may include a battery reverse polarity protection circuit at the connection between the electrical component 102 and the first battery 104 or the second battery 106 to prevent the battery from being inserted with reverse polarity. The battery reverse polarity protection circuit may be configured to prevent damage to the electrical component 102 when the battery polarity is reversed. For example, the battery reverse polarity protection circuit may include, but is not limited to, a diode.

[0101] Figure 5A and Figure 5B According to various embodiments, as Figures 1 to 4B Different views of a computer mouse 500 (or battery-operated computer mouse) of an example of a battery-operated handheld device 100. According to various embodiments, a computer mouse 500 is provided to illustrate Figures 1 to 4B The battery operated handheld device 100 is an embodiment of the present invention. Therefore, the computer mouse 500 includes Figures 1 to 4B All features and limitations of the battery-operated handheld device 100 are described in detail below, and like component numbers refer to the same / common parts throughout. Figure 5A The computer mouse 500 according to various embodiments is shown with the cover member 116 of the housing 110 removed and the second battery 106 inserted into the second battery slot 140 of the battery holder 120 . Figure 5B Another view of the computer mouse 500 is shown to illustrate the lower surface 516a of the cover member 116 of the housing 110 according to various embodiments. Figure 5C A top view of the computer mouse 500 is shown without the cover member 116 and with the second battery 106 inserted into the second battery slot 140 of the battery holder 120 in accordance with various embodiments. Figure 5DA cross-sectional side view of a computer mouse 500 is shown with the second battery 106 inserted into the second battery well 140 of the battery holder 120 and the first battery 104 present at the first battery well 130 of the battery holder 120 in accordance with various embodiments.

[0102] According to various embodiments, the computer mouse 500 may include a housing 110. The housing 110 may be an outer housing of the computer mouse 500. According to various embodiments, the housing 110 may define an inner chamber to accommodate or cover or encapsulate the electrical component 102 of the computer mouse 500. According to various embodiments, the electrical component 102 of the computer mouse 500 may include, but is not limited to, one or a combination of a circuit board, an integrated circuit, an electronic component, a sensor, a detector, a receiver, a transmitter, a switch, a processor, or a memory. The electrical component 102 of the computer mouse 500 may be configured to be used as a handheld pointing device to control a graphical user interface of a computer.

[0103] According to various embodiments, the housing 110 of the computer mouse 500 may include a front region 112 and a rear palm rest region 514b as the rear region 114. According to various embodiments, when the computer mouse 500 is in use and held in the hand of a user, the front region 112 may be oriented away from the user, and the rear palm rest region 514b may be oriented toward the user. Therefore, when the computer mouse 500 is placed on a table, the rear palm rest region 514b of the computer mouse 500 may be grasped by the palm of the user, and the user holds the computer mouse 500 so that the front region 112 of the computer mouse 500 may be oriented or pointed away from the user. Therefore, when the computer mouse 500 is in use and held in the hand of a user, the user may hold the computer mouse 500 with the front region 112 of the computer mouse 500 oriented or away from the user, and the rear palm rest region 514b of the computer mouse 500 may be oriented or pointed toward the user. The front region 112 of the computer mouse 500 may be relative to the rear palm rest region 514b of the computer mouse 500.

[0104] According to various embodiments, the housing 110 of the computer mouse 500 may be an elongated housing 110a. According to various embodiments, the elongated housing 110a of the computer mouse 500 may include a longitudinal front portion 112a and a longitudinal rear portion 114a. The longitudinal front portion 112a and the longitudinal rear portion 114a may be two opposite longitudinal ends of the elongated housing 110a. According to various embodiments, the longitudinal front portion 112a may serve as the front region 112 of the computer mouse 500, and the longitudinal rear portion 114a may serve as the rear palm rest region 514b of the computer mouse 500. Therefore, when the computer mouse 500 is in use and held in the hand of a user, the longitudinal front portion 112a may be oriented away from the user, and the longitudinal rear portion 114a may be oriented toward the user.

[0105] According to various embodiments, the computer mouse 500 may include a battery holder 120. According to various embodiments, the battery holder 120 may be disposed within the housing 110 or the elongated housing 110a. Thus, the battery holder 120 may be accommodated or covered or encapsulated by the housing 110 or the elongated housing 110a.

[0106] According to various embodiments, the battery holder 120 of the computer mouse 500 may include at least two (or two or more) battery slots 130, 140 (or battery brackets) for receiving at least two (or two or more) different types of batteries 104, 106 (see Figure 2A and Figure 2B ). Different types of batteries 104, 106 may have different battery sizes. For example, a first type of battery 104 may have a first battery size, and a second type of battery 106 may have a second battery size that is different from the first battery size. According to various embodiments, at least two battery slots 130, 140 of the battery holder 120 may be configured side by side. According to various embodiments, the electrical component 102 of the computer mouse 500 may be configured to be powered by one or more batteries of the same battery size. Therefore, when one or more batteries of the first type are loaded into the battery holder 120, or when one or more batteries of the second type are loaded into the battery holder 120, the electrical component 102 of the computer mouse 500 may be powered. According to various embodiments, when different types of batteries 104, 106 of different battery sizes are used in the computer mouse 500, the weight distribution of the computer mouse 500 may be changed or varied or altered or adjusted or customized. Thus, the user can selectively switch between different types of batteries 104, 106 using different battery sizes to power the computer mouse 500 so as to change or adjust or customize the weight distribution of the computer mouse 500 according to hand size and wrist strength and different usage scenarios and / or requirements. For example, the user can flexibly switch between different types of different batteries 104, 106 to use smaller batteries to reduce the overall weight of the computer mouse 500, or use larger batteries when battery life is more important.

[0107] According to various embodiments, the battery holder 120 of the computer mouse 500 may include a first battery slot 130 (or a first battery tray) and a second battery slot 140 (or a second battery tray). According to various embodiments, each of the first battery slot 130 and the second battery slot 140 may be a channel or a groove or a narrow and elongated depression. According to various embodiments, the first battery slot 130 may be sized to accommodate a first battery 104 of a first battery size. According to various embodiments, the second battery slot 140 may be sized to accommodate a second battery 106 of a second battery size. The first battery size and the second battery size may be different battery sizes. According to various embodiments, the second battery slot 140 may be adjacent to the first battery slot 130 so as to be arranged side by side with the first battery slot 130. Therefore, the first battery slot 130 and the second battery slot 140 may be parallel to each other, and may be adjacent to each other so that the first battery slot 130 and the second battery slot 140 may border each other.

[0108] According to various embodiments, the electrical component 102 of the computer mouse 500 may be powered by the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 or the second battery 106 of the second battery size inserted into the second battery slot 140 of the battery holder 120. Therefore, the electrical component 102 of the computer mouse 500 may be powered when only the first battery 104 of the first battery size is inserted into the first battery slot 130 of the battery holder 120. The electrical component 102 of the computer mouse 500 may also be powered when only the second battery 106 of the second battery size is inserted into the second battery slot 140 of the battery holder 120. Therefore, the electrical component 102 of the computer mouse 500 may be the electrical component 102 of the computer mouse 500 that only needs to install one of the first battery 104 or the second battery 106 on the battery holder 120 to be powered.

[0109] According to various embodiments, the battery holder 120 of the computer mouse 500 can be configured as an adjustable weight distribution mechanism to shift the center of gravity of the computer mouse 500. Therefore, by loading the first battery 104 of the first battery size into the first battery slot 130 of the battery holder 120 or loading the second battery 106 of the second battery size into the second battery slot 140 of the battery holder 120, the center of gravity of the computer mouse 500 can be changed or varied or altered or adjusted or customized. Therefore, by selectively loading the first battery 104 or the second battery 106 into the battery holder 120 to power the electrical component 102 of the computer mouse 500, the weight distribution of the computer mouse 500 can be changed or varied or altered or adjusted or customized to accommodate the user's hand size and / or wrist strength, as well as different usage scenarios and / or requirements. In addition, the battery holder 120 of the computer mouse 500 can also be used to provide the user with the flexibility to use different battery sizes that the user already has. For example, the user is provided with the option of using a smaller battery to reduce the overall weight of the computer mouse 500, or using a larger battery when battery life is more important.

[0110] According to various embodiments, the battery holder 120 of the computer mouse 500 as an adjustable weight distribution mechanism may shift the center of gravity of the computer mouse 500 between a first predetermined center of gravity 154 associated with a first battery 104 of a first battery size inserted into a first battery slot 130 of the battery holder 120 and a second predetermined center of gravity 156 associated with a second battery 106 of a second battery size inserted into a second battery slot 140 of the battery holder 120. According to various embodiments, the second predetermined center of gravity 156 may be located behind the first predetermined center of gravity 154 relative to the front region 112 and the rear palm rest region 514b of the housing 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the elongated housing 110a). Thus, the second predetermined center of gravity 156 may be closer to the rear palm rest region 514b of the housing 110 (or the longitudinal rear end portion 114a of the elongated housing 110a). Thus, the first predetermined center of gravity 154 may be closer to the front region 112 of the housing 110 (or the longitudinal front end portion 112a of the elongated housing 110a ) and may be located forward of the second predetermined center of gravity 156 .

[0111] According to various embodiments, the battery holder 120 of the computer mouse 500 may be configured as an adjustable weight distribution mechanism to switch the computer mouse 500 between different weight modes, including but not limited to at least a balanced weight mode and a rear-weight mode, or a front-weight mode and a balanced weight mode, or a front-weight mode and a rear-weight mode. According to various embodiments, in the balanced weight mode, the center of gravity of the computer mouse 500 may be in the middle or center around the computer mouse 500. According to various embodiments, in the front-weight mode, the center of gravity of the computer mouse 500 may be in front of the middle or center of the computer mouse 500 and toward the front region 112 of the housing 110 (or the longitudinal front end portion 112a of the elongated housing 110a). According to various embodiments, in the rear-weight mode, the center of gravity of the computer mouse 500 may be behind the middle or center of the computer mouse 500 and toward the rear palm rest region 514b of the housing 110 (or the longitudinal rear end portion 114a of the elongated housing 110a).

[0112] According to various embodiments, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 may be aligned with the battery-free center of gravity of the computer mouse 500. The battery-free center of gravity of the computer mouse 500 may be the center of gravity of the computer mouse 500 when no battery is inserted or installed in the battery holder 120. That is, the battery-free center of gravity of the computer mouse 500 may be the center of gravity of the computer mouse 500 when it is not weighted or without a battery. Therefore, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 and the battery-free center of gravity of the computer mouse 500 may coincide. Therefore, regardless of whether the first battery 104 is inserted into the first battery slot 130 of the battery holder 120, the center of gravity of the computer mouse 500 may not move forward or backward relative to the front region 112 and the rear palm rest region 514b of the housing 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the elongated housing 110a).

[0113] According to various embodiments, the first battery well 130 of the battery holder 120 may correspond to the first predetermined center of gravity 154 of the computer mouse 500. Thus, the first battery well 130 of the battery holder 120 may serve as a visual pointer to the location of the first predetermined center of gravity 154 of the computer mouse 500. For example, the center of the first battery well 130 of the battery holder 120 may be aligned with or may coincide with the first predetermined center of gravity 154 of the computer mouse 500. Thus, the center of the first battery well 130 of the battery holder 120 may provide a visual reference for the location of the first predetermined center of gravity 154 of the computer mouse 500.

[0114] According to various embodiments, the second battery well 140 of the battery holder 120 can correspond to the second predetermined center of gravity 156 of the computer mouse 500. Thus, the second battery well 140 of the battery holder 120 can serve as a visual pointer to the location of the second predetermined center of gravity 156 of the computer mouse 500. For example, the center of the second battery well 140 of the battery holder 120 can be aligned with or can coincide with the second predetermined center of gravity 156 of the computer mouse 500. Thus, the center of the second battery well 140 of the battery holder 120 can provide a visual reference for the location of the second predetermined center of gravity 156 of the computer mouse 500.

[0115] According to various embodiments, the battery holder 120 of the computer mouse 500 may be disposed within the housing 110 (or the elongated housing 110a) in a manner such that each of the first battery slot 130 and the second battery slot 140 may be non-parallel to a front-to-back centerline 111 extending vertically between the front region 112 and the rear palm rest region 514b of the housing 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the elongated housing 110a). The front-to-back centerline 111 may pass through the center of the housing 110 (or the elongated housing 110a) from the front region 112 to the rear palm rest region 514b (or from the longitudinal front end portion 112a to the longitudinal rear end portion 114a) so as to divide the housing 110 (or the elongated housing 110a) into two equal lateral portions. Therefore, the slot axis of the first battery slot 130 may be angled or inclined relative to the front-to-back centerline 111. Likewise, the slot axis of the second battery slot 140 may be angled or inclined relative to the front-back centerline 111. According to various embodiments, each of the first battery slot 130 and the second battery slot 140 may intersect the front-back centerline 111 at an angle. For example, each of the first battery slot 130 and the second battery slot 140 may intersect the front-back centerline 111 diagonally or laterally. Thus, each of the first battery slot 130 and the second battery slot 140 may be oriented diagonally or laterally relative to the front-back centerline 111.

[0116] According to various embodiments, in the computer mouse 500, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 and the second predetermined center of gravity 156 associated with the second battery 106 of the second battery size inserted into the second battery slot 140 of the battery holder 120 may be along the front-back centerline 111. Therefore, each of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be located on the front-back centerline 111 and spaced apart from each other. Therefore, by selectively mounting the first battery 104 or the second battery 106 to the battery holder 120, the weight distribution of the computer mouse 500 may be switched between the first predetermined center of gravity 154 and the second predetermined center of gravity 156 along the front-back centerline 111.

[0117] According to various embodiments, in the computer mouse 500, the first predetermined center of gravity 154 associated with the first battery 104 of the first battery size inserted into the first battery slot 130 of the battery holder 120 and the second predetermined center of gravity 156 associated with the second battery 106 of the second battery size inserted into the second battery slot 140 of the battery holder 120 may be laterally offset from the front-back centerline 111. Therefore, each of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may not be located on the front-back centerline 111. According to various embodiments, the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset from the front-back centerline 111 to the same side. According to various embodiments, the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset from the front-back centerline 111 to opposite sides. According to various embodiments, one of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be along the front-back centerline 111, and the other of the first predetermined center of gravity 154 and the second predetermined center of gravity 156 may be laterally offset from the front-back centerline 111. However, regardless of whether the first predetermined center of gravity 154 and the second predetermined center of gravity 156 are along the front-to-back centerline 111 or laterally offset from the front-to-back centerline 111, the second predetermined center of gravity 156 may still be spaced rearwardly from the first predetermined center of gravity 154 relative to the front area 112 and the rear palm rest area 514b of the shell 110 (or the longitudinal front end portion 112a and the longitudinal rear end portion 114a of the slender shell 110a).

[0118] According to various embodiments, in a computer mouse 500 (e.g., Figure 5D ), the width of the first battery slot 130 of the battery holder 120 may be smaller than the width of the first battery 104, and the width of the second battery slot 140 of the battery holder 120 may be smaller than the width of the second battery 106. According to various embodiments, when the first battery 104 is mounted in the first battery slot 130 of the battery holder 120, since the width of the first battery 104 is wider than the width of the first battery slot 130, the side of the first battery 104 may protrude from the boundary of the first battery slot 130 so as to extend over the second battery slot 140 or enter the second battery slot 140. According to various embodiments, when the second battery 106 is mounted in the second battery slot 1430 of the battery holder 120, since the width of the second battery 106 is wider than the width of the second battery slot 140, the side of the second battery 106 may protrude from the boundary of the second battery slot 140 so as to extend over the first battery slot 130 or enter the first battery slot 130. Therefore, the battery holder 120 of the computer mouse 500 may prevent the second battery slot 140 from receiving the second battery 106 while the first battery slot 130 is receiving the first battery 104. Therefore, the battery holder 120 of the computer mouse 500 may not allow the second battery 106 to be installed in the second battery slot 140 while the first battery 104 is installed in the first battery slot 130.

[0119] According to various embodiments, in the computer mouse 500, the housing 110 (or the elongated housing 110a) may include a cover member 116. According to various embodiments, the cover member 116 may be removably placed over the battery holder 120 to conceal the battery holder 120. According to various embodiments, the cover member 116 may be removably attached to the rest of the housing 110 (or the elongated housing 110a), or may be removably attached to the battery holder 120, or may be removably attached to the internal frame structure of the battery-operated handheld device 100. According to various embodiments, in the computer mouse 500, the cover member 116 may be an upper member 515 of the housing 110 (or the elongated housing 110a). According to various embodiments, the housing 110 (or the elongated housing 110a) may include an upper member 515 and a base member 517. The upper member 515 and the base member 517 may be two separate parts of the housing 110 (or the elongated housing 110a). The upper member 515 may be a top housing cover of the outer housing of the computer mouse 500. The base member 517 may be a bottom housing cover of the outer housing of the computer mouse 500. According to various embodiments, assembling the upper member 515 and the base member 517 together may define an inner chamber to house, or enclose, or package the electrical components 102 of the computer mouse 500. Thus, the upper member 515 may be removably coupled to the base member 517. According to various embodiments, the battery holder 120 may be fixedly coupled to the base member 517 of the housing 110 or may be integral with the base member 517 of the housing 110 (or the elongated housing 110a).

[0120] According to various embodiments, in the computer mouse 500, the cover member 116 may include a protrusion 118. According to various embodiments, the protrusion 118 may extend from a lower surface 516a of the cover member 116. When the cover member 116 is placed on the battery holder 120, the lower surface 516a of the cover member 116 may face the battery holder 120. According to various embodiments, the protrusion 118 may extend toward the battery holder 120. According to various embodiments, the protrusion 118 may serve as a retainer or a stop rib to prevent the first battery 104 or the second battery 106 from being displaced or removed from the first battery slot 130 or the second battery slot 140, respectively. Therefore, the end surface 518a of the protrusion 118 may be suspended above the first battery slot 130 and the second battery slot 140. Therefore, when the first battery 104 is installed into the first battery slot 130, the first portion 518b of the end surface 518a of the projection 118 may be suspended above the first battery slot 130 so as to loosely abut against the first battery 104. Similarly, when the second battery 106 is installed into the second battery slot 140, the second portion 518c of the end surface 518a of the projection 118 may be suspended above the second battery slot 140 so as to loosely abut against the second battery 106. Therefore, the first portion 518b and the second portion 518c of the end surface of the projection 118 may respectively block or hinder the first battery 104 or the second battery 106 from being displaced or removed from the first battery slot 130 or the second battery slot 140, respectively. The first portion 518b of the end surface 518a of the projection 118 may have a contour corresponding to the first battery 104. The second portion 518 c of the end surface 518 a of the protrusion 118 may have a contour corresponding to the second battery 106 .

[0121] According to various embodiments, the battery holder 120 of the computer mouse 500 may include an adapter receptacle 550. According to various embodiments, the adapter receptacle 550 may be configured to receive the adapter 508 of the computer mouse 500. The adapter 508 may be used to be plugged into a computer so that the computer mouse 500 may be wirelessly connected to the computer. According to various embodiments, the adapter receptacle 550 may be adjacent to the second battery well 140, so that the second battery well 140 may be between the first battery well 130 and the adapter receptacle 550. Thus, the adapter receptacle 550 may be adjacent to a longitudinal side of the second battery well 140, which is opposite the first battery well 130. According to various embodiments, the adapter receptacle 550 may be oriented parallel to the second battery well 140.

[0122] According to various embodiments, in the computer mouse 500, the first battery slot 130 of the battery holder 120 may include a first pair of opposing support walls 132, 134 for engaging with the cover and the base of the first battery 104, respectively, so as to accommodate the first battery 104 in the middle. According to various embodiments, the first pair of opposing support walls 132, 134 may be located at opposite longitudinal ends of the first battery slot 130, so as to define the length of the first battery slot 130. Therefore, the first pair of opposing support walls 132, 134 may be spaced apart by a first predetermined distance, so as to define the length of the first battery slot 130, so as to accommodate the first battery 104 in size. Therefore, the first predetermined distance may be equal to or longer than the length of the first battery 104. According to various embodiments, the second battery slot 140 may include a second pair of opposing support walls 142, 144 for engaging against the cover and the base of the second battery 106, respectively, so as to accommodate the second battery 106 in the middle. According to various embodiments, the second pair of opposing support walls 142, 144 may be located at opposite longitudinal ends of the second battery slot 140 so as to define the length of the second battery slot 140. Therefore, the second pair of opposing support walls 142, 144 may be spaced apart by a second predetermined distance for defining the length of the second battery slot 140, which is sized to accommodate the second battery 106. Therefore, the second predetermined distance may be equal to or longer than the length of the second battery 106. According to various embodiments, the second predetermined distance may be different from the first predetermined distance because the battery sizes of the first battery 104 and the second battery 106 are different. For example, when the battery size of the first battery 104 (e.g., AA) is longer than the second battery 106 of another battery size (e.g., AAA), the second predetermined distance may be shorter than the first predetermined distance.

[0123] According to various embodiments, in the computer mouse 500, the first wall 132 of the first pair of opposing support walls of the first battery slot 130 may include a tab 136, and the second wall 134 of the first pair of opposing support walls of the first battery slot 130 may include a spring 138. According to various embodiments, the tab 136 and the spring 138 of the first battery slot 130 may be pressed against the cover and the base of the first battery 104, respectively, so as to coordinately hold the first battery 104 in the first battery slot 130. According to various embodiments, the spring 138 may include, but is not limited to, a coil spring, a conical spring, a spiral spring, a leaf spring, a torsion spring, or a circular spring. According to various embodiments, the tab 136 may be made of a conductive material for connecting the positive terminal of the first battery 104 at the cover of the first battery 104 to the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the spring 138 may be made of a conductive material for connecting the negative terminal of the first battery 104 at the base of the first battery 104 to the electrical component 102 of the battery-operated handheld device 100 .

[0124] According to various embodiments, the first wall 142 of the second pair of opposing support walls of the second battery slot 140 may include a tab 146, and the second wall 144 of the second pair of opposing support walls of the second battery slot 140 may include a spring 148. According to various embodiments, the tab 146 and the spring 148 of the second battery slot 140 may be pressed against the cover and the base of the second battery 106, respectively, so as to coordinately hold the second battery 106 in the second battery slot 140. According to various embodiments, the spring 148 may include, but is not limited to, a coil spring, a conical spring, a spiral spring, a leaf spring, a torsion spring, or a circular spring. According to various embodiments, the tab 146 may be made of a conductive material for connecting the positive terminal of the second battery 106 at the cover of the second battery 106 to the electrical component 102 of the battery-operated handheld device 100. According to various embodiments, the spring 148 may be made of a conductive material for connecting the negative terminal of the second battery 106 at the base of the second battery 106 to the electrical component 102 of the battery-operated handheld device 100.

[0125] According to various embodiments, in the computer mouse 500, the first wall 132 of the first pair of opposing support walls of the first battery slot 130 and the first wall 142 of the second pair of opposing walls of the second battery slot 140 may be aligned. Therefore, the first wall 132 of the first battery slot 130 and the first wall 142 of the second battery slot 140 may be side by side and may be continuous in a straight line without interruption.

[0126] Various embodiments have provided a battery operated handheld device or computer mouse that allows users to customize weight distribution according to their hand size and wrist strength and different usage scenarios and / or requirements. In various embodiments, a battery holder is provided in the battery operated handheld device or computer mouse, and the user can selectively load batteries of different battery sizes to adjust or customize or change the weight distribution of the battery operated handheld device or computer mouse. In addition, the battery operated handheld device or computer mouse also provides the user with the flexibility to use different battery types of different battery sizes as different options depending on whether weight distribution and / or battery life is more important. Therefore, the battery operated handheld device or computer mouse has provided users with a simpler and more versatile solution.

[0127] Although the present invention has been specifically shown and described with reference to specific embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims. Therefore, the scope of the present invention is indicated by the appended claims, and all changes within the meaning and range of equivalents of the claims are intended to be included therein.

Claims

1. A battery operated handheld device comprising: a housing for enclosing the electrical components of the handheld device, the housing having a front region and a rear region, whereby when the handheld device is in use and held in the hand of a user, the front region is oriented away from the user and the rear region is oriented toward the user; as well as A battery holder is disposed in the housing, and the battery holder comprises: a first battery well sized to receive a first battery of a first battery size; and a second battery slot, which is adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size, wherein the electrical components of the handheld device are powered by the first battery of the first battery size inserted into the first battery slot of the battery holder, or by the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and a second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the second predetermined center of gravity is located behind the first predetermined center of gravity relative to the front area of ​​the housing.

2. The device according to claim 1, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder is aligned with a battery-free center of gravity of the handheld device.

3. The device according to claim 1, wherein: The battery holder is disposed within the housing in such a manner that each of the first battery slot and the second battery slot is not parallel to a front-rear center line extending vertically between the front region and the rear region of the housing.

4. The device as claimed in claim 3, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and the second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder are along the front-rear centerline.

5. The device according to claim 3, wherein: Each of the first battery well and the second battery well is oriented diagonally relative to the front-rear centerline.

6. The device according to claim 1, wherein: In order to prevent the first battery slot from receiving the first battery while allowing the second battery slot to receive the second battery, the width of the first battery slot of the battery holder is smaller than the width of the first battery, and the width of the second battery slot of the battery holder is smaller than the width of the second battery.

7. The device of claim 1, wherein: The housing includes a cover member removably placed on the battery holder to conceal the battery holder, wherein the cover member includes a protrusion extending toward the battery holder, the protrusion serving as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

8. A battery operated handheld device comprising: an elongated housing for encapsulating the electrical components of the handheld device, the elongated housing having a longitudinal front portion and a longitudinal rear portion, wherein the longitudinal front portion and the longitudinal rear portion are two opposite longitudinal ends of the elongated housing; and A battery holder is disposed in the elongated housing, the battery holder comprising: a first battery well sized to receive a first battery of a first battery size; and a second battery slot, which is adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size, wherein the electrical components of the handheld device are powered by the first battery of the first battery size inserted into the first battery slot of the battery holder, or by the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the handheld device between a first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and a second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the second predetermined center of gravity is located behind the first predetermined center of gravity relative to the longitudinal front end portion of the slender shell.

9. The device of claim 8, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder is aligned with a battery-free center of gravity of the handheld device.

10. The device according to claim 8, wherein: The battery holder is disposed within the housing in such a manner that each of the first battery slot and the second battery slot is non-parallel to a front-rear center line extending vertically between the longitudinal front end portion and the longitudinal rear end portion of the housing.

11. The device of claim 10, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and the second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder are along the front-rear centerline.

12. The device of claim 10, wherein: Each of the first battery well and the second battery well is oriented diagonally relative to the front-rear centerline.

13. The device of claim 8, wherein: In order to prevent the first battery slot from receiving the first battery while allowing the second battery slot to receive the second battery, the width of the first battery slot of the battery holder is smaller than the width of the first battery, and the width of the second battery slot of the battery holder is smaller than the width of the second battery.

14. The device of claim 8, wherein: The housing includes a cover member removably placed on the battery holder to conceal the battery holder, wherein the cover member includes a protrusion extending toward the battery holder, the protrusion serving as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

15. The device according to claim 8, wherein: The first battery slot includes a first pair of opposing support walls, which are used to respectively engage with the cover and the base of the first battery so as to accommodate the first battery therebetween, and the first pair of opposing support walls are spaced apart by a first predetermined distance so as to enable the size to be designed to accommodate the first battery, wherein the second battery slot includes a second pair of opposing support walls, which are used to respectively engage against the cover and the base of the second battery so as to accommodate the second battery therebetween, and the second pair of opposing support walls are spaced apart by a second predetermined distance so as to enable the size to be designed to accommodate the second battery, and the second predetermined distance is different from the first predetermined distance.

16. The device of claim 15, wherein: The second predetermined distance is shorter than the first predetermined distance.

17. The device of claim 15, wherein: The first wall of each of the first pair of opposing support walls and the second pair of opposing support walls includes an ear piece, and the second wall of each of the first pair of opposing support walls and the second pair of opposing support walls includes a spring, so that the ear piece and the spring are pressed against the cover and the base of the first battery or the second battery, respectively.

18. A battery-operated computer mouse comprising: A housing for encapsulating the electrical components of the computer mouse, the housing having a rear palm rest area and a front area opposite to the rear palm rest area; as well as A battery holder is disposed in the housing, and the battery holder comprises: a first battery well sized to receive a first battery of a first battery size; and a second battery slot, which is adjacent to the first battery slot so as to be arranged side by side with the first battery slot, the second battery slot being sized to accommodate a second battery of a second battery size, the second battery size being different from the first battery size, wherein the electrical components of the computer mouse are powered by the first battery of the first battery size inserted into the first battery slot of the battery holder, or by the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the battery holder is configured as an adjustable weight distribution mechanism to shift the center of gravity of the computer mouse between a first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and a second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder, wherein the second predetermined center of gravity is located rearward of the first predetermined center of gravity relative to the front area of ​​the housing.

19. The computer mouse of claim 18, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder is aligned with a battery-free center of gravity of the computer mouse.

20. The computer mouse of claim 18, wherein: The battery holder is disposed within the housing in such a manner that each of the first battery slot and the second battery slot is non-parallel to a front-rear centerline extending vertically between the front region and the rear palm rest region of the housing.

21. The computer mouse of claim 20, wherein: The first predetermined center of gravity associated with the first battery of the first battery size inserted into the first battery slot of the battery holder and the second predetermined center of gravity associated with the second battery of the second battery size inserted into the second battery slot of the battery holder are along the front-rear centerline.

22. The computer mouse of claim 20, wherein: Each of the first battery well and the second battery well is oriented diagonally relative to the front-rear centerline.

23. The computer mouse of claim 18, wherein: In order to prevent the first battery slot from receiving the first battery while allowing the second battery slot to receive the second battery, the width of the first battery slot of the battery holder is smaller than the width of the first battery, and the width of the second battery slot of the battery holder is smaller than the width of the second battery.

24. The computer mouse of claim 18, wherein: The housing includes a cover member removably placed on the battery holder to conceal the battery holder, wherein the cover member includes a protrusion extending toward the battery holder, the protrusion serving as a retainer to prevent the first battery or the second battery from being removed from the first battery slot or the second battery slot respectively.

25. The computer mouse of claim 24, wherein: The cover member is an upper member of the housing, and the battery holder is fixedly coupled to or integrated with a base member of the housing.

26. The computer mouse of claim 24, wherein: The protrusion includes a free end having an end surface, a first portion of which is suspended above the first battery slot, and a second portion of which is suspended above the second battery slot, wherein the first portion has a contour corresponding to the first battery and the second portion has a contour corresponding to the second battery.

27. The computer mouse of claim 18, wherein: The battery holder includes an adapter receptacle for receiving an adapter of the computer mouse, the adapter receptacle being adjacent to the second battery slot such that the second battery slot is located between the first battery slot and the adapter receptacle.

28. The computer mouse of claim 18, wherein: The first battery slot includes a first pair of opposing support walls, which are used to respectively engage with the cover and the base of the first battery so as to accommodate the first battery therebetween, and the first pair of opposing support walls are spaced apart by a first predetermined distance so as to enable the size to be designed to accommodate the first battery, wherein the second battery slot includes a second pair of opposing support walls, which are used to respectively engage against the cover and the base of the second battery so as to accommodate the second battery therebetween, and the second pair of opposing support walls are spaced apart by a second predetermined distance so as to enable the size to be designed to accommodate the second battery, and the second predetermined distance is different from the first predetermined distance.

29. The computer mouse of claim 28, wherein: The second predetermined distance is shorter than the first predetermined distance.

30. The computer mouse of claim 28, wherein: The first wall of each of the first pair of opposing support walls and the second pair of opposing support walls includes an ear piece, and the second wall of each of the first pair of opposing support walls and the second pair of opposing support walls includes a spring, so that the ear piece and the spring are pressed against the cover and the base of the first battery or the second battery, respectively.

31. The computer mouse of claim 28, wherein: The first wall of the first pair of opposing support walls of the first battery well is aligned with the first wall of the second pair of opposing support walls of the second battery well.

Images